“It's the beginning of dramatic transformation,” says Olly Bartlett, a remote-sensing specialist at the University of Hertfordshire in Hatfield, UK, and an author of the study1, published today in Nature Geoscience, that reports these results.
From white to green
Bartlett and his colleagues analyzed images taken between 1986 and 2021 of the Antarctic Peninsula — a part of the continent that juts north towards the tip of South America. The pictures were taken by the Landsat satellites operated by NASA and the US Geological Survey in March, which is the end of the growing season for vegetation in the Antarctic.
To assess how much of the land was covered with vegetation, the researchers took advantage of the properties of growing plants: healthy plants absorb a lot of red light and reflect a lot of near-infrared light. Scientists can use satellite measurements of light at these wavelengths to determine whether a piece of land is covered by thriving plants.
The team found that the peninsula's area swathed in plants grew from less than one square kilometer in 1986 to nearly 12 square kilometers in 2021 (see ‘An icy land goes green’). The rate of expansion was roughly 33% higher between 2016 and 2021 compared with the four-decade study period as a whole.
More and more climate scientists are supporting experiments to cool Earth by altering the stratosphere or the ocean.
As recently as 10 years ago most scientists I interviewed and heard speak at conferences did not support geoengineering to counteract climate change. Whether the idea was to release large amounts of sulfur dioxide into the stratosphere to “block” the sun’s heating or to spread iron across the ocean to supercharge algae that breathe in carbon dioxide, researchers resisted on principle: don’t mess with natural systems because unintended consequences could ruin Earth. They also worried that trying the techniques even at a small scale could be a slippery slope to wider deployment and that countries would use the promise of geoengineering as an excuse to keep burning carbon-emitting fossil fuels.
But today, climate scientists more openly support experimenting with these and other proposed strategies, partly because entrepreneurs and organizations are going ahead with the methods anyway—often based on little data or field trials. Scientists want to run controlled experiments to see if the methods are productive, to test consequences, and perhaps to show objectively that the approaches can cause serious problems.
“We do need to try the techniques to figure them out,” says Rob Jackson, a professor at Stanford University, chair of the international research partnership Global Carbon Project, and author of a book on climate solutions called Into the Clear Blue Sky (Scribner, 2024). “But doing research does make them more likely to happen. That is the knotty part of all this.”
Figure 1. The Vadret da Tschierva glacier in 1935 (top) and in 2022 (bottom).Photos courtesy of swisstopo, L. Hösli, G. Carcanade, M. Huss, VAW-ETHZ.
Topics: Civilization, Climate Change, Fluid Mechanics, Global Warming, Meteorology, Research
Glaciers—dynamic masses of ice descending from the mountain tops—have always been fascinating to humankind. They intrinsically belong to the high-alpine environment. Countless photographs immortalize their bright white beauty and the power they radiate. Glaciers have been depicted on oil and parchment for centuries, as if trying to capture their transience. They are constantly moving; under the influence of gravity, the ice generated at high elevation flows downwards and shapes tremendous glacier tongues that are speckled with deep fissures known as crevasses. Sometimes, the openings to these crevasses are hidden by a light dusting of snow; subsequently, mountaineers need a lot of experience to accurately judge their exposure to the ice.
Even though glaciers are not living things, they are not lifeless. For many mountain regions worldwide, glaciers function similarly to lungs: They absorb snow in wintertime and “breathe” out water during hot summer days. This glacier water is urgently needed, especially in dry periods.
Glaciers consequently have a relevance that goes far beyond the mountain peaks where they reside. A reduction in meltwater from glaciers would be painful for nature and the global economy: irrigation of fields would be restricted, the temperature and mineralization of rivers would change, and during periods of drought, serious bottlenecks could come into existence for the drinking water supply and for shipping on rivers. In addition, melting glacial ice contributes to sea-level rise and therefore directly or indirectly affects billions of people living near the coast.
Despite, or perhaps because of, their majestic appearance, glaciers can also pose an immediate threat. Glaciers can produce floods and ice avalanches that endanger villages in the valleys. Together with permafrost, glaciers also stabilize mountain flanks and therefore reduce the potential for rock falls and landslides—a role that is becoming increasingly lost.
The so-called “eternal” ice of glaciers tells a long and dynamic story. During the Ice Age, ice sheets covered a large part of the North American continent, as well as Europe. The last time this happened was around 20,000 years ago—a blink of the eye from a geological perspective. Since then, the climate has changed, due both to natural factors and to anthropogenic influences—human-caused factors—which have massively accelerated over the past 100 years (Marzeion et al., 2014). As a result, the glaciers are still present, but they are getting smaller every year.
Scientists used samples from sclerosponges off the coast of Puerto Rico to calculate ocean surface temperatures going back 300 years. Douglas Rissing/iStockphoto/Getty Images
Topics: Climate Change, Existentialism, Global Warming, Research, Thermodynamics
These findings, published Monday in the journal Nature Climate Change, are alarming but also controversial. Other scientists say the study contains too many uncertainties and limitations to draw such firm conclusions and could end up confusing public understanding of climate change.
Sponges — which grow slowly, layer by layer — can act like data time capsules, allowing a glimpse into what the ocean was like hundreds of years ago, long before the existence of modern data.
Using samples from sclerosponges, which live for centuries, the team of international scientists was able to calculate ocean surface temperatures going back 300 years.
They found human-caused warming may have started earlier than currently assumed and, as a result, global average temperature may have already warmed more than 1.5 degrees Celsius above pre-industrial levels. Researchers say the results also suggest global temperature could overshoot 2 degrees of warming by the end of the decade.
Under the 2015 Paris Agreement, countries pledged to restrict global warming to less than 2 degrees above pre-industrial levels, with an ambition to limit it to 1.5 degrees. The pre-industrial era — or the state of the climate before humans started burning large amounts of fossil fuels and warming the planet — is commonly defined as 1850-1900.
Topics: Civilization, Climate Change, Energy, Environment, Existentialism, Global Warming
Another week, another catastrophic, record-setting, history-making flood, this time in Kentucky.
Preliminary assessments indicate rainfall in Graves County last week likely set a new record for most precipitation in a 24-hour period, with 11.28 inches of rain. This would make it yet another “1,000-year” flood event, which had, according to historical projections, less than a 0.1 percent chance of occurring in any given year. One of the towns that experienced flash flooding was Mayfield, a community still rebuilding from a 2021 tornado that killed 57 people.
This was just one of the 11 flash flood emergencies in as many days in the United States, according to Weather Channel meteorologist Heather Zons. These events have claimed multiple lives: 2-year-old Mattie Shiels, 9-month-old brother, Conrad, and their mother, Katie Seley drowned after getting swept away by flash flooding in Pennsylvania, during an event that killed at least four others. In New York earlier this month, 43-year-old Pamela Nugent was swept away trying to evacuate a flooded area; 63-year-old Stephen Davoll drowned in his home in Vermont.
Other catastrophic, deadly flooding events have occurred almost simultaneously around the globe. Just this weekend, 10 inches of rain fell on parts of Nova Scotia, Canada, which is about as much as the region experiences over a period of three months. Four people, including two children, are still missing.
This map shows global temperature anomalies for July 2023 according to the GISTEMP analysis by scientists at NASA’s Goddard Institute for Space Studies. Temperature anomalies reflect how July 2023 compared to the average July temperature from 1951-1980. Credit: NASA’s Goddard Institute for Space Studies
Topics: Civilization, Climate Change, Existentialism, Global Warming, NASA
Editor's Note: This release has been updated to add additional graphics and captions and to spell out the words degrees Fahrenheit and Celsius.
According to scientists at NASA’s Goddard Institute for Space Studies (GISS) in New York, July 2023 was hotter than any other month in the global temperature record.
“Since day one, President Biden has treated the climate crisis as the existential threat of our time,” said Ali Zaidi, White House National Climate Advisor. Against the backdrop of record-high temperatures, wildfires, and floods, NASA’s analysis puts into context the urgency of President Biden’s unprecedented climate leadership. From securing the Inflation Reduction Act, the largest climate investment in history, to invoking the Defense Production Act to supercharge domestic clean energy manufacturing, to strengthening climate resilience in communities nationwide, President Biden is delivering on the most ambitious climate agenda in history.”
Overall, July 2023 was 0.43 degrees Fahrenheit (F) (0.24 degrees Celsius (C)) warmer than any other July in NASA’s record, and it was 2.1 F (1.18 C) warmer than the average July between 1951 and 1980. The primary focus of the GISS analysis is long-term temperature changes over many decades and centuries, and a fixed base period yields anomalies that are consistent over time. Temperature "normals" are defined by several decades or more - typically 30 years.
Topics: Civilization, Climate Change, Democracy, Existentialism, Global Warming
In my post on Friday, two weeks ago, I compared the Earth to a plastic or glass bottle in a microwave. Of course, YouTube has an example of someone not taking Thermodynamics seriously. After a LONG two minutes and some change, the explosion is a sad but apt metaphor for the climate change that we have allowed to become a crisis, barreling forward into a full-blown catastrophe. It’s dystopian what’s going on. A short list:
In Italy, they’re discussing “underground climate change” as the summer is so hot it melted the insulation on their power grid underground. They’re also evacuating for wildfires.
If you fall on the pavement in Phoenix, Arizona, you’re taken to the burn unit, as asphalt in Arizona has been measured at 180-degree temperatures. Well, it's below boiling.
Off the coast of climate change-denying Florida, the ocean temperatures are 101.4 degrees Fahrenheit, balmy for a jacuzzi but catastrophic for coral that acts as a natural barrier to hurricanes and “us,” as it is in our food chain. Their death is the bellwether of coming food shortages, which of course, usually precipitates armed conflicts, either internal or international.
At the behest of a classmate from NC A&T, my wife and I attended her family reunion in Fayetteville, NC, a week and weekend before my family reunion in Virginia Beach, Virginia. The similarities I recall were striking (they’ll make sense as to how this relates to our current situation):
Good food! African American Family Reunions are legendary for spreading food, including fried chicken, baked beans, homemade macaroni and cheese, and potato salad.
Fellowship. I saw cousins I hadn’t seen in years. I did a “paint and sip” party, where I hadn’t painted ANYTHING in decades. It was a cathartic activity led by a therapy artist for people suffering from mental health crises like PTSD.
The purpose of the business meeting, in my friend’s and my family’s case, was the discussion where to have the NEXT family reunion. For my family, 2025 will be in California (Columbia, SC as a backup), Pittsburgh, Pennsylvania, in 2027, and Greensboro, NC, in 2029.
In each case, planning for the NEXT family reunions assumes we have a functional planet to plan and experience them on.
Mathematics is said to be applied philosophy, physics applied mathematics, and engineering applied physics.
In America, policy is applied physics coupled with political realities.
Currently, in certain democracies, we have parties that concede to the reality of climate change and those obliged to the Fossil Fuels Industry, which is likely the most destructive industry, only second to military contractors.
Fossil Fuels has known about the effects of their product since the late seventies when I was in high school. They hired the same lawyers who obfuscated the effects of cigarette smoking, enabled by spineless politicians who themselves, like drug dealers, weren’t smokers. The body count rivals the holocaust.
That body count was in the millions of humans volunteering to pollute their bodies. The coming body count will number in the hundreds of millions of climate refugees fleeing from coastal cities and the house-less dying from heat exhaustion.
The hoarding of wealth does not consume me, which is the basis of our current crisis: industries and individuals who are too selfish to think beyond the current business quarter and the next quarter. That’s the span of their attention, and the only thing that will spark their attention is if any action they take is profitable and they can avoid paying taxes that help the rest of humanity they’re a part of.
What is happening astonishes climate scientists. This dystopian hellscape was to occur in the year 2050: a twenty-seven-year acceleration.
Part of planning family reunions is the notion that there is a future and a hope to have children and add to the legacy of families.
Millennials and GEN Z are starting out living longer with their parents than previous generations, not purchasing their first home, not attending worship services, delaying or opting to NOT have children because they’re bereft of a future, or hope, stolen from them by a generation in its twilight, that doesn’t care about the wanton destruction they leave in the wake of their grandchildren due to mental depravity and greed.
“People with hoarding disorder have persistent difficulty getting rid of or parting with possessions due to a perceived need to save the items. Attempts to part with possessions create considerable distress and lead to decisions to save them. The resulting clutter disrupts the ability to use living spaces (American Psychiatric Association, 2013).”
If you’re not used to sharing, you’re likely to use phrases like “socialism” and “communism” (or woke) when the fact is, you don’t care about anyone or anything other than yourself. This self-absorption will only buy them a few weeks at best after a full societal collapse. At that point, “billionaire” and “millionaire” are irrelevant titles with no places to spend.
Part of planning family reunions is the notion that there is a future and a hope to have children and add to the legacy of families.
Because of the avarice of evil men (mostly), I’m starting to have my doubts.
The new composition for fluorine-containing electrolytes promises to maintain high battery charging performance for future electric vehicles even at sub-zero temperatures. (Image by Shutterstock.)
Topics: Battery, Chemistry, Climate Change, Global Warming, Lithium, Materials Science
Scientists developed a new and safer electrolyte for lithium-ion batteries that work as well in sub-zero conditions as it does at room temperature.
Many owners of electric vehicles worry about how effective their batteries will be in very cold weather. Now new battery chemistry may have solved that problem.
In current lithium-ion batteries, the main problem lies in the liquid electrolyte. This key battery component transfers charge-carrying particles called ions between the battery’s two electrodes, causing the battery to charge and discharge. But the liquid begins to freeze at sub-zero temperatures. This condition severely limits the effectiveness of charging electric vehicles in cold regions and seasons.
To address that problem, a team of scientists from the U.S. Department of Energy’s (DOE) Argonne and Lawrence Berkeley national laboratories developed a fluorine-containing electrolyte that performs well even in sub-zero temperatures.
“Our research thus demonstrated how to tailor the atomic structure of electrolyte solvents to design new electrolytes for sub-zero temperatures.” — John Zhang, Argonne group leader.
“Our team not only found an antifreeze electrolyte whose charging performance does not decline at minus 4 degrees Fahrenheit, but we also discovered, at the atomic level, what makes it so effective,” said Zhengcheng “John” Zhang, a senior chemist and group leader in Argonne’s Chemical Sciences and Engineering division.
This low-temperature electrolyte shows promise of working for batteries in electric vehicles, as well as in energy storage for electric grids and consumer electronics like computers and phones.
Topics: Battery, Chemistry, Climate Change, Economics, Global Warming
Welcome back to The Green Era, a weekly newsletter bringing you the news and trends in the world of sustainability. Click subscribe above to be notified of future editions.
The shift to renewable energy has caused consternation over the fate of workers in the fossil fuel industry. Those same concerns are hitting the automotive sector as U.S. demand for electric vehicles grows.
EVs require not just new assembly lines and parts but also factories to build the batteries that power them. The president of one of the biggest unions called the transition the largest in the industry’s history.
The automotive sector and its workers are not new to factory closures. The Great Recession brought the big three automakers to their knees, forcing the federal government to bail them out, leaving cities like Detroit and large swaths of the midwest with car workers out of a job.
This time could be different. Many factories are being converted and are investing in retraining their workers. The batteries and charging infrastructure required present another opportunity. Ford, General Motors, and Volkswagen are all building new battery manufacturing plants or expanding existing ones in Tennessee.
Researchers detected a surprising rise in levels of chlorofluorocarbons between 2010 and 2020 using a monitoring network that includes the Jungfraujoch research station in Switzerland. Credit: Shutterstock
Topics: Chemistry, Civilization, Climate Change, Environment, Global Warming
From my resume: "I eliminated ozone-depleting materials using Failure Mode and Effects Analysis (FMEA) and Taguchi Methods of Quality Engineering - using an L16 Orthogonal Array - in the Poly Silicon etch substituting out CFCs in manufacturing processes." How I did it: I substituted our CFC with Sulfur Hexafluoride and Nitrogen (SF6/N2). On the negative photoresist product, the CFC over-etch was 50 seconds. For the positive photoresist, CFC had a 25-second process. I was able to reduce each product line to two seconds, increasing throughput, and the process increased die yields. It is possible to balance the positive impact of product improvement and the environment. I did it in the 90s, so the following report is disappointing.
*****
The Montreal Protocol, which banned most uses of ozone-destroying chemicals known as chlorofluorocarbons (CFCs) and called for their global phase-out by 2010, has been a great success story: Earth’s ozone layer is projected to recover by the 2060s.
So atmospheric chemists were surprised to see a troubling signal in recent data. They found that the levels of five CFCs rose rapidly in the atmosphere from 2010 to 2020. Their results are published today in Nature Geoscience1.
“This shouldn’t be happening,” says Martin Vollmer, an atmospheric chemist at the Swiss Federal Laboratories for Materials Science and Technology in Dübendorf, who helped to analyze data from an international network of CFC monitors. “We expect the opposite trend. We expect them to slowly go down.”
At current levels, these CFCs do not pose much threat to the ozone layer’s healing, said Luke Western, a chemist at the University of Bristol, UK, at an online press conference on 30 March. CFCs, once used as refrigerants and aerosols, can persist in the atmosphere for hundreds of years. Given that they are potent greenhouse gases, eliminating emissions of these CFCs will also have a positive impact on Earth’s climate. The collective annual warming effect of these five chemicals on the planet is equivalent to the emissions produced by a small country like Switzerland.
It’s highly likely that manufacturing plants are accidentally releasing three of the chemicals — CFC-113a, CFC-114a, and CFC-115 — while producing replacements for CFCs. When CFCs were phased out, hydrofluorocarbons (HFCs) were brought in as substitutes. But CFCs can crop up as unintended by-products during HFC manufacture. This accidental production is discouraged by the Montreal Protocol but not prohibited by it.
A vertical shock tube at Los Alamos National Laboratory is used for turbulence studies. Sulfur hexafluoride is injected at the top of the 5.3-meter tube and allowed to mix with air. The waste is ejected into the environment through the blue hose at the tube tower’s lower left; in the fiscal year 2021, such emissions made up some 16% of the lab’s total greenhouse gas emissions. The inset shows a snapshot of the mixing after a shock has crossed the gas interface; the darker gas is SF6, and the lighter is air. The intensities yield density values.
Topics: Civilization, Climate Change, Global Warming, Research
Reducing air travel, improving energy efficiency in infrastructure, and installing solar panels are among the obvious actions that individual researchers and their institutions can implement to reduce their carbon footprint. But they can take many other small and large steps, too, from reducing the use of single-use plastics and other consumables and turning off unused instruments to exploiting waste heat and siting computing facilities powered by renewable energy. On a systemic level, measures can encourage behaviors to reduce carbon emissions; for example, valuing in-person invited job talks and remote ones equally could lead to less air travel by scientists.
So far, the steps that scientists are taking to reduce their carbon footprint are largely grassroots, notes Hannah Johnson, a technician in the imaging group at the Princess Máxima Center for Pediatric Oncology in Utrecht and a member of Green Labs Netherlands, a volunteer organization that promotes sustainable science practices. The same goes for the time and effort they put in for the cause. One of the challenges, she says, is to get top-down support from institutions, funding agencies, and other national and international scientific bodies.
At some point, governments are likely to make laws that support climate sustainability, says Astrid Eichhorn, a professor at the University of Southern Denmark whose research is in quantum gravity and who is active on the European Federation of Academies of Sciences and Humanities committee for climate sustainability. “We are in a situation to be proactive and change in ways that do not compromise the quality of our research or our collaborations,” she says. “We should take that opportunity now and not wait for external regulations.”
Suppose humanity manages to limit emissions worldwide to 300 gigatons of carbon dioxide equivalent (CO2e). In that case, there is an 83% chance of not exceeding the 1.5 °C temperature rise above preindustrial levels set in the 2015 Paris Agreement, according to a 2021 Intergovernmental Panel on Climate Change special report. That emissions cap translates to a budget of 1.2 tons of CO2e per person annually through 2050. Estimates for the average emissions by researchers across scientific fields are much higher and range widely in part because of differing and incomplete accounting approaches, says Eichhorn. She cites values from 7 to 18 tons a year for European scientists.
National Ignition Facility operators inspect a final optics assembly during a routine maintenance period in August. Photo credit: Lawrence Livermore National Laboratory
After the heady, breathtaking coverage of pop science journalism, I dove into the grim world inhabited by the Bulletin of the Atomic Scientists on their take on the first-ever fusion reaction. I can say that I wasn’t surprised. With all this publicity, it will probably get the Nobel Prize nomination (my guess). Cool Trekkie trivia: the National Ignition Facility was the backdrop for the Enterprise's warp core for Into Darkness.
*****
This week’s headlines have been full of reports about a “major breakthrough” in nuclear fusion technology that, many of those reports misleadingly suggested, augurs a future of abundant clean energy produced by fusion nuclear power plants. To be sure, many of those reports lightly hedged their enthusiasm by noting that (as The Guardian put it) “major hurdles” to a fusion-powered world remain.
Indeed, they do.
The fusion achievement that the US Energy Department announced this week is scientifically significant, but the significance does not relate primarily to electricity generation. Researchers at Lawrence Livermore National Laboratory’s National Ignition Facility, or NIF, focused the facility’s 192 lasers on a target containing a small capsule of deuterium–tritium fuel, compressing it and inducing what is known as ignition. In a written press release, the Energy Department described the achievement this way: “On December 5, a team at LLNL’s National Ignition Facility (NIF) conducted the first controlled fusion experiment in history to reach this [fusion ignition] milestone, also known as scientific energy breakeven, meaning it produced more energy from fusion than the laser energy used to drive it. This historic, first-of-its-kind achievement will provide the unprecedented capability to support [the National Nuclear Security Administration’s] Stockpile Stewardship Program and will provide invaluable insights into the prospects of clean fusion energy, which would be a game-changer for efforts to achieve President Biden’s goal of a net-zero carbon economy.”
Because of how the Energy Department presented the breakthrough in a news conference headlined by Energy Secretary Jennifer Granholm, news coverage has largely glossed over its implications for monitoring the country’s nuclear weapons stockpile. Instead, even many serious news outlets focused on the possibility of carbon-free, fusion-powered electricity generation—even though the NIF achievement has, at best, a distant and tangential connection to power production.
To get a balanced view of what the NIF breakthrough does and does not mean, I (John Mecklin) spoke this week with Bob Rosner, a physicist at the University of Chicago and a former director of the Argonne National Laboratory who has been a longtime member of the Bulletin’s Science and Security Board. The interview has been lightly edited and condensed for readability.
The Shisper Glacier in April 2018, left, and April 2019, right. The surging ice blocked a river fed by a nearby glacier, forming a new lake.YALE ENVIRONMENT 360 / NASA
Topics: Civilization, Climate Change, Environment, Existentialism, Global Warming
Everything about Earth and the organization of human civilization is about the control of resources.
We’ve come up with arbitrary “rules” about who is worthy of those resources, and how much they can horde, or obtain. Pharaohs, priests, secret societies, and guilds all have “knowledge” they jealously guard, or it may be as simple as caste or color. Every society with billionaires, emperors, kings, oligarchs, potentates, and sheiks all have a designated group to blame for the ills of poor planning and sadistic resource management: indigenous, or imported servants by force, they are the easy go-to designated pariahs. It is a cynical way to get rich, but a poor method of species survival. A resource we all need, from billionaires to pariahs, is potable water to drink. Jackson, Mississippi is a foreshadowing of what we might expect.
This continual differentiation of mankind by caste, color, station, and monetary wealth has brought us to this rolling train wreck catastrophe. Climate refugees occurred in 2005 in the aftermath of Hurricane Katrina. Climate refugees occurred after the flooding in Pakistan. Climate refugees will occur in the aftermath of future superstorms. Lest we think ourselves immune, we may all be seeking higher ground, leaving homes and businesses for something we could have solved decades ago except for avarice.
The permafrost is melting, and that will release viruses that haven't seen the light of day for several millennia, and we have no vaccines for what will likely be carried on the wind and zoonotically transferred between animals and humans.
Starships are as real as magic carpets, genies, Yetis, and mermaids.
There is no “planet B,” life, or wealth on a nonfunctional planet.
Warmer air is thinning most of the vast mountain range’s glaciers, known as the Third Pole because they contain so much ice. The melting could have far-reaching consequences for flood risk and for water security for a billion people who rely on meltwater for their survival.
Spring came early this year in the high mountains of Gilgit-Baltistan, a remote border region of Pakistan. Record temperatures in March and April hastened melting of the Shisper Glacier, creating a lake that swelled and, on May 7, burst through an ice dam. A torrent of water and debris flooded the valley below, damaging fields and houses, wrecking two power plants and washing away parts of the highway and a bridge connecting Pakistan and China.
Pakistan’s climate change minister, Sherry Rehman, tweeted videos of the destruction and highlighted the vulnerability of a region with the largest number of glaciers outside the Earth’s poles. Why were these glaciers losing mass so quickly? Rehman put it succinctly. “High global temperatures,” she said.
Just over a decade, ago, relatively little was known about glaciers in the Hindu Kush Himalayas, the vast ice mountains that run across Central and South Asia, from Afghanistan in the west to Myanmar in the east. But a step-up in research in the past 10 years — spurred in part by an embarrassing error in the Intergovernmental Panel on Climate Change’s 2007 Fourth Assessment Report, which predicted that Himalayan glaciers could melt away by 2035 — has led to enormous strides in understanding.
Scientists now have data on almost every glacier in high-mountain Asia. They know “how these glaciers have changed not only in area but in mass during the last 20 years,” says Tobias Bolch, a glaciologist with the University of St Andrews in Scotland. He adds, “We also know much more about the processes which govern glacial melt. This information will give policymakers some instruments to really plan for the future.”
Cool stuff: the diagram shows how the temperature of the caloric material was measured. The plot in the center shows the temperature change in the sample when exposed to a magnetic field. The plot on the right shows the change in temperature when the sample is strained. (Courtesy: Peng Wu et al/Acta Materialia237 118154)
Topics: Global Warming, Green Tech, Materials Science, Solid-State Physics, Thermodynamics
Researchers in China have shown that applying strain to a composite material using an electric field induces a large and reversible caloric effect. This novel way of enhancing the caloric effect without a magnetic field could open new avenues of solid-state cooling and lead to more energy-efficient and lighter refrigerators.
The International Institute of Refrigeration estimates that 20% of all electricity used globally is expended on vapor-compression refrigeration – which is the technology used in conventional refrigerators and air conditioners. What is more, the refrigerants used in these systems are powerful greenhouse gases that contribute significantly to global warming. As a result, scientists are trying to develop more environmentally friendly refrigeration systems.
Cooling systems can also be made from completely solid-state systems, but these cannot currently compete with vapor compression for most mainstream applications. Today, most commercial solid-state cooling systems use the Peltier effect, which is a thermoelectric process that suffers from high cost and low efficiency.
Topics: Civilization, Climate Change, Environment, Global Warming
Humans can survive up to 108.14 F, or 42.3 C before our brains and constitutions (bodies) start turning to mush. As a species, we're going to have to decide if enriching a handful of global oligarchs is more important than survival. Wealth cannot be measured on a dysfunctional planet.
Nobody in Ashish Agashe’s seven-story apartment building in Thane, a suburb of Mumbai, had air conditioning 20 years ago. Today, his apartment is one of only two of the 28 units without it.
“Once you make peace with sweating,” says Agashe, “it is easy to survive this weather.” He decided against air conditioning because it gives him a “faux feel,” and he doesn’t believe his income should determine his lifestyle choices. Later, he was “chuffed” to learn that his choice is better for the planet.
Unlike Agashe, many Indians are adopting air conditioning to deal with more frequent and more intense heat waves. Earlier this year, temperatures in parts of India and Pakistan surpassed 120 degrees Fahrenheit.
At age 37, Agashe hopes temperatures do not rise high enough in his lifetime to require air conditioning in Mumbai, a humid and densely populated city on India’s west coast that today rarely sees temperatures above 40 degrees Celsius (104 degrees Fahrenheit). But even if the climate stopped changing, he worries that the heat produced by all the air conditioners in his building, which spills in through his open window, may force him to install air conditioning, too.
Kayakers and other boaters paddled up to Manchin, who famously lives on a houseboat named “Almost Heaven” when he’s in DC. The subtitle should be “for the rest of you, hell.” Source: Washingtonian, Maya Pottiger, 10/14/21
Topics: Civilization, Environment, Existentialism, Global Warming
Four more people died that night. In the morning the sun again rose like the blazing furnace of heat it was, blasting the rooftop and its sad cargo of wrapped bodies. Every rooftop and, looking down at the town, every sidewalk was now a morgue. The town was a morgue, and it was as hot as ever, maybe hotter. The thermometer now said 42 degrees (107.6 F), humidity 60 percent.
—Kim Stanley Robinson, from The Ministry for the Future
The first chapter of Kim Stanley Robinson’s The Ministry for the Future takes my breath away. Not just because I can almost feel the heat and humidity dripping off the pages, but because I know that—although the story is fictional—similar scenes are already playing out in real life.
Topics: Astronautics, Climate Change, Environment, Futurism, Global Warming, Mars, Spaceflight
When Elon Musk founded SpaceX in 2002, he envisioned a greenhouse on Mars, not unlike the one later depicted in the 2015 blockbuster The Martian. Soon, his fantasy grew from a small-scale botanical experiment into a vision for a self-sustaining Martian city. In a speech at the 67th International Astronautical Congress in 2016, he argued his point. “History is going to bifurcate along with two directions. One path is we stay on earth forever and then there will be some eventual extinction event,” Musk says. “The alternative is to become a space-faring civilization and a multi-planet species, which, I hope you would agree, is the right way to go.”
Though Musk later clarified that the extinction event he referenced may take place millennia (or even eons) in the future, the conditions on earth today are becoming increasingly dangerous for human beings. Deadly heatwaves, food insecurity, and catastrophic natural disasters are a few of the hazards that we face as the planet continues to warm. Unfortunately, the Red Planet is a very long way from becoming a viable alternative home. While we measure carbon dioxide concentrations in parts per million on earth, Mars’ atmosphere contains 96% CO2, just one of a litany of logistical nightmares that Martian colonists would have to overcome.
In a perfect world, Musks’ dreams of extraterrestrial civilization could coexist with the eco-forward values that have driven ventures like Tesla’s solar program. But while SpaceX’s aspirations are in space, its operations have an undeniable impact at home. Unlike a Tesla sports car, SpaceX’s rockets aren’t propelled by electricity — they burn kerosene.
Carbon emissions from space launches are dwarfed by other sources of greenhouse gasses, but they could have an outsized impact on climate. The reason for this stems from one particular product of rocket propulsion: black carbon. These tiny chunks of crystalline carbon atoms are short-lived in the atmosphere, but highly absorptive of sunlight. On the Earth’s surface, black carbon from diesel, coal, and wood combustion poses a threat to environmental and public health, particularly in developing countries. But in the upper atmosphere, rocket engines are the sole source of black carbon. For years, scientists have warned that these emissions could have unpredictable effects on climate. Still, research on the topic has been frustratingly slow.
“We identified the issue with black carbon in 2010,” says Darin Toohey, an atmospheric scientist at the University of Colorado Boulder. “The story comes and goes, but the basic players remain the same.”
Clean energy sources like wind turbines are part of Argonne’s decades-long effort to create a carbon-free economy. (Image by Shutterstock/Engel.ac.)
Topics: Battery, Biofuels, Climate Change, Existentialism, Global Warming
Reducing carbon dioxide emissions and removing them from the atmosphere is critical to the global fight against climate change. Called decarbonization, it is one of the focal points in the nation’s strategy to ensure a bright future for our planet and all who live on it.
The U.S. Department of Energy’s (DOE) Argonne National Laboratory has been at the forefront of the quest to decarbonize the U.S. economy for decades.
Argonne scientists are developing new materials for batteries and researching energy-efficient transportation and sustainable fuels. They are expanding carbon-free energy sources like nuclear and renewable power. Argonne researchers are also exploring ways to capture carbon dioxide from the air and from industrial sources, use it to produce chemicals, or store it in the ground.
The ultimate goal? To reduce the greenhouse gases that trap heat in the atmosphere and warm the planet.
Fast physics Formula E has created huge advances in electric vehicles off the racing circuit as well as on, but they still have drawbacks. (Courtesy: Luis Licona/EPA-EFE/Shutterstock)
Topics: Alternate Energy, Battery, Biofuels, Climate Change, Global Warming
Cars – and in particular racecars – might seem the villains in a world grappling with climate change. Racing Green: How Motorsport Science Can Change the World hopes to convince you of exactly the opposite, with science journalist Kit Chapman showing how motorsports not only pioneers new, planet-friendlier machines and materials, but saves lives on and off the track too.
The first part of Chapman’s argument tracks the historical development of cars and competition. His stories show how, from its start, racing has served as a research lab and proving ground for new technologies. The first organized motor races were competitions to encourage innovation, akin to today’s X-Prizes. In 1894 Le Petit Journal offered a purse for the first car to make it from Paris to Rouen, while later races emphasized pure speed or, like the legendary 24 Hours of Le Mans, endurance. Chapman provides a whirlwind tour through the development of the internal combustion engine-powered car and its damning limitations, including the copious greenhouse-gas emissions and the inability to ever achieve more than 50% thermal efficiency.
He then introduces us to new racing series like Formula E and Extreme E, which have changed electric cars “from an eccentric folly to the undisputed future of the automotive industry”. Chapman highlights the advantages of electric vehicles without glossing over their drawbacks: recycling challenges, the potential for difficult-to-extinguish fires resulting from thermal runaway, and ethical/sustainability issues surrounding the materials used. Throughout this section, he links motorsport advances with “real-life” applications. For example, the same flywheels that enabled Audi’s hybrid racecars to take all three podium spots at the 24 Hours of Le Mans in 2012 made London buses more energy efficient. Some connections are a little more tenuous than others, but they are uniformly fascinating.
A radical reimagining of information processing could greatly reduce the energy use—as well as greenhouse gas emissions and waste heat—from computers. Credit: vchal/Getty Images
In case you had not noticed, computers are hot—literally. A laptop can pump out thigh-baking heat, while data centers consume an estimated 200 terawatt-hours each year—comparable to the energy consumption of some medium-sized countries. The carbon footprint of information and communication technologies as a whole is close to that of fuel used in the aviation industry. And as computer circuitry gets ever smaller and more densely packed, it becomes more prone to melting from the energy it dissipates as heat.
Now physicist James Crutchfield of the University of California, Davis, and his graduate student Kyle Ray have proposed a new way to carry out computation that would dissipate only a small fraction of the heat produced by conventional circuits. In fact, their approach, described in a recent preprint paper, could bring heat dissipation below even the theoretical minimum that the laws of physics impose on today’s computers. That could greatly reduce the energy needed to both perform computations and keep circuitry cool. And it could all be done, the researchers say, using microelectronic devices that already exist.
In 1961 physicist Rolf Landauer of IBM’s Thomas J. Watson Research Center in Yorktown Heights, N.Y., showed that conventional computing incurs an unavoidable cost in energy dissipation—basically, in the generation of heat and entropy. That is because a conventional computer has to sometimes erase bits of information in its memory circuits in order to make space for more. Each time a single bit (with the value 1 or 0) is reset, a certain minimum amount of energy is dissipated—which Ray and Crutchfield have christened “the Landauer.” Its value depends on ambient temperature: in your living room, one Landauer would be around 10–21 joule. (For comparison, a lit candle emits on the order of 10 joules of energy per second.)
