The solar system is bathed in galactic cosmic rays: protons and atomic nuclei traveling, nearly at the speed of light, from all directions. Earth’s magnetic field and atmosphere shield us from most of this harmful radiation, but outside of that shelter, the bombardment is strong enough to prove a threat to astronauts.

But a new analysis of data from the Chang’e-4 lunar lander published in Science Advances revealed an extended cosmic ray shelter stretching from Earth at an unexpected angle at least as far as the Moon, though exactly how far is unclear. When the Moon passes through this shelter in its orbit of Earth, the lunar surface experiences a roughly 20% reduction in the galactic cosmic ray flux.

“We found Earth casts kind of a shadow in the galactic cosmic ray space,” said Robert F. Wimmer-Schweingruber, a space physicist at Kiel University in Germany. “This was unexpected, and to me that was the cool part of this paper.”

The surprise came in part because the shape of Earth’s magnetic field is well understood: It forms a strong protective region around the planet known as the magnetosphere, with a long “tail” shaped by the solar wind of charged particles streaming from the Sun.

“You would expect an effect inside the tail or as [the Moon goes] through the tail, but we find an effect of the tail ahead of the tail,” said Wimmer-Schweingruber. He noted that if the magnetotail is like a person’s shadow cast behind them by sunshine, this newly discovered bubble would be like if that shadow extended to the front of the person as well and tilted rather than lying along a line connecting Earth, the Sun, and the Moon.

“The observed region of reduced [galactic cosmic ray] flux on the sunward side of the Moon’s orbit outside the geomagnetic field where it is compressed by the solar wind is unexpected,” Brian Flint Rauch wrote in an email. Rauch, a cosmic ray physicist at Washington University in St. Louis who was not involved in the Chang’e-4 study, added that any reduction in cosmic ray exposure is noteworthy for potential astronauts on the Moon.

A 20% decrease in flux during part of the lunar orbit is unlikely to make a large difference in determining when it’s safest for astronauts go out onto the lunar surface. But it might help guide individual decisions in the moment because while spacesuits won’t protect astronauts from cosmic rays, the metal of a habitat or lander would.

Shelter from the Storm

The China National Space Administration’s Chang’e-4 spacecraft was the first successful mission to the lunar farside, landing in the Von Kármán crater on 3 January 2019. As part of its suite of scientific instruments, the probe carried the Lunar Lander Neutron and Dosimetry experiment (LND) developed by Wimmer-Schweingruber and collaborators at Kiel University in an astonishingly rapid 18 months. This detector was designed in part to gauge conditions for human exploration by measuring the radiation on the Moon’s surface, including cosmic rays.

LND collected data between January 2019 and January 2022. Though Apollo astronauts carried radiation dosimeters, those instruments did not provide detailed information about fluctuations in exposure, making LND the primary source for such information from the lunar surface. For that reason, it provided the best data on galactic cosmic rays, which consist mostly of protons accelerated to nearly the speed of light in the remnants of supernovas.

These protons arrive in the solar system from every direction, often undeflected by the magnetic fields of stars or planets. However, Earth’s magnetosphere is strong enough to repel many galactic cosmic rays in low orbit, where the International Space Station (ISS) resides. Meanwhile, measurements show the ambient radiation dose on the lunar surface is more than twice as high as on the ISS and nearly 200 times as high as on Earth, which is a matter of concern for long-term human presence on the Moon.

All of these reasons are why everyone was surprised when LND data revealed Earth’s magnetic protection extends far beyond the magnetosphere and at an angle to the line connecting Earth and the Sun. Lead author Wensai Shang of Shandong University in Weihai, China, worked out that the angle corresponds to the twisting of the Sun’s magnetic field.

“As the Sun rotates, it pulls the solar wind along the solar magnetic field,” Wimmer-Schweingruber said. “That produces a spiral.” Apparently, an unanticipated interaction between this twist in the solar magnetic field and Earth’s magnetic field produces the cosmic ray shelter revealed by LND.

Wimmer-Schweingruber noted that he was extremely skeptical that such results were possible at first. He warned Shang, a graduate student he worked with, that he might be wasting his time looking for cosmic ray anomalies in the Chang’e-4 data. It was only after Shang provided ironclad analyses ruling out other possibilities that he was swayed.

With the LND instrument shut off, researchers need other sources of data to continue the work. Wimmer-Schweingruber expressed particular interest in understanding how cosmic rays produce secondary radiation—especially neutrons, which are very dangerous to humans—when they impact the lunar soil. In the meantime, the general understanding of the radiation environment provided by Chang’e-4 shows we still have some surprises in store as humans explore the solar system.

—Matthew R. Francis (@BowlerHatScience.org), Science Writer

Citation: Francis, M. R. (2026), Moon mission data reveal unexpected cosmic ray “shadow,” Eos, 107, https://doi.org/10.1029/2026EO260137. Published on 4 May 2026.

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Source: AGU Advances

Urbanization, climate change, and fire suppression practices are contributing to increased wildfire risk at the densely populated wildland-urban interface. These factors make fires more unpredictable and harder to manage. In January 2025, this was made devastatingly clear in Los Angeles, when massive wildfires engulfed entire hillsides and canyons, destroying neighborhoods and damaging surrounding ecosystems.

The Mediterranean climate region of California, which stretches up most of the state’s coastline, is a naturally fire-prone landscape because its dry conditions support vegetation growth and also allow for fire to spread easily. As wildfires become more intense, better modeling and understanding of their drivers is crucial in efforts to predict risk.

Ward-Baranyay et al. looked at three of the January 2025 Los Angeles wildfires by analyzing preburn conditions, such as fuel characteristics, topography (including elevation and slope), and wind speed. Satellite observations gathered from the Ecosystem Spaceborne Thermal Radiometer Experiment on Space Station (ECOSTRESS) and the Earth Surface Mineral Dust Source Investigation (EMIT)—precursors to a recently announced NASA mission, the Explorer for Artemis Geology Lunar and Earth (EAGLE)—provided detailed information about the vegetation’s condition before the fires began. The researchers then built a random forest regression model to predict burn severity based on these conditions, ultimately demonstrating that prefire fuel conditions were a key driver of the destructive wildfires’ immediate effects on wildlands.

The model used in the study was able to accurately capture about 60% of the patterns in burn severity. It was most accurate for the Palisades and Hughes fires, but less accurate for the Eaton Fire. This discrepancy could be because the area burned by the Eaton Fire was more topographically variable, meaning its burn severity drivers may not have been fully captured by the model, the researchers suggest. Vegetation type was also a strong performance indicator: Terrain with shrub or scrub cover, the dominant vegetation type, offered the most accurate predictions for burn severity. The burn patterns of forests and other landscape types were less accurately captured.

Fuel conditions emerged as the dominant driver of burn severity, more so than topography or weather. In particular, how abundant, wet, dry, or stressed vegetation is can hint at how severe future fires may be. Tracking and monitoring these fuel conditions, researchers suggest, may be a way to monitor wildfire hazard in California and other fire-prone regions. (AGU Advances, https://doi.org/10.1029/2025AV002179, 2026)

—Rebecca Owen (@beccapox.bsky.social), Science Writer

Citation: Owen, R. (2026), Want to predict wildfire severity? Look to the state of vegetation, Eos, 107, https://doi.org/10.1029/2026EO260130. Published on 4 May 2026.

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Editors’ Highlights are summaries of recent papers by AGU’s journal editors.

Source: Journal of Geophysical Research: Earth Surface

Antarctica’s snow and ice surfaces play a key role in how the continent exchanges heat and moisture with the atmosphere. A key property controlling this exchange is aerodynamic roughness length (z_o), which measures how “bumpy” the surface is. Rougher surfaces, such as snow sastrugi (wind-formed ridges and grooves), interact more strongly with the air above, affecting snow movement, melting, and local environmental conditions. Despite its importance, z_o is often treated as a single, constant value over large areas in Earth system models because it is difficult to measure.

Zheng et al. [2026] use a multi-temporal Unmanned Aerial Vehicle (UAV) oblique photogrammetry to map fine scale z_o variability at Qinling Station in East Antarctica. The results show that z_o can vary substantially depending on surface type, measurement scale, model choice, and meteorological conditions. The complex response of surface microtopography to meteorological events is a noteworthy new finding. For example, in snow sastrugi areas, z_o can vary by an order of magnitude over time, increasing after snowfall and decreasing under strong winds. These findings highlight that capturing fine-scale surface roughness is essential for accurately modeling snow–atmosphere interactions in Antarctica and could help improve current weather and climate models for polar regions.

Citation: Zheng, Z., Zheng, L., Wang, K., Clow, G. D., & Cheng, X. (2026). UAV oblique imagery reveals order-of-magnitude changes in snow aerodynamic roughness length under shifting meteorological regimes at Qinling Station, East Antarctica. Journal of Geophysical Research: Earth Surface, 131, e2025JF008781. https://doi.org/10.1029/2025JF008781

   —Elizabeth Orr, Associate Editor, JGR: Earth Surface

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On average, each American throws away about 81 pounds of clothing, shoes, and household textiles every year. That’s roughly a hamper full every month for each person. For a family of four, this adds up to over 320 pounds of textiles tossed or donated each year. Most people don’t realize how much they discard until they actually weigh it over a year.

The number comes from EPA’s most recent, 2018 sustainable-materials accounting, which puts U.S. post-consumer textile generation at roughly 17 million tons and the recovery rate at 14.7 percent. While the EPA has discontinued its reporting, ThredUp’s 2025 Resale Report and the Apparel Impact Institute updates suggest per-capita generation has continued rising. Most of what falls inside that 14.7 percent is downcycled into industrial wiping rags or insulation, not turned into new clothing.

What “donating” actually does

The mental model in most American closets is that the donation bin is the recycling bin. It isn’t. Goodwill, Salvation Army, and the secondhand chains sell what they can on the resale floor, typically only 10 to 30 percent of the clothing they accept as donations. The rest is sold by the pound to textile graders, who export the higher grades to wholesale markets in West Africa, Eastern Europe, and Central America, bale the remainder as wiping rags or insulation feedstock, and landfill the rest.

That export pipeline is under pressure. Ghana, Kenya, and Chile have moved to restrict or refuse low-grade used-clothing imports, citing the volume of unsellable fast-fashion synthetics arriving contaminated and culturally mismatched. The January 2025 GAO report on textile recovery flagged the offshore-disposal pathway as structurally fragile and quietly subsidized by U.S. consumers who treat donation as absolution.

The amount of clothing waste is closely tied to price. Since 1995, clothing prices in the U.S. have dropped by over 30 percent, even as other costs have gone up. This is mainly due to ultra-fast-fashion brands like Shein and Temu. Many clothes, especially those made from polyester-spandex blends, aren’t made to last, be repaired, or recycled. They’re often thrown out after just six wears. According to McKinsey’s State of Fashion report, the average piece of clothing is now worn only seven to ten times before being discarded, much less than in the past.

The household bill

The value of clothing can change a lot, so it’s harder to put an exact dollar amount on waste compared to food. Still, the Bureau of Labor Statistics says the average U.S. household spends about $1,900 a year on clothes. If 30 to 40 percent of those clothes are thrown out within two seasons, that means a household is tossing $570 to $760 worth of new clothing every year.

The environmental impact of clothing is even bigger before it reaches your closet. The UN Environment Programme says fashion is responsible for 2 to 8 percent of global greenhouse gas emissions and 20 percent of industrial water pollution. Making just one cotton t-shirt uses about 2,700 liters of water, which is as much as one person drinks in two and a half years.

The policy lever finally arriving

For years, there were no rules holding clothing producers responsible for textile waste in the U.S. That changed with California’s SB 707, the Responsible Textile Recovery Act of 2024, which is the first law of its kind in the country. CalRecycle chose Landbell USA to run the program starting February 27, 2026. Brands selling clothes and household textiles in California will have to help pay for collection and processing, with requirements rolling out through 2030. Other states like New York, Massachusetts, and Washington are considering similar laws that would make clothing manufacturers cover the costs of fast fashion waste.

Fiber-to-fiber recycling — the missing technology piece — is moving, slowly. Circ, Syre, and Reju are at pilot or first-commercial scale. Renewcell, the most visible name in cellulosic recycling, filed for bankruptcy in early 2024 and has since been acquired and restarted as Circulose. Textile recycling technology is real, but the economics of the business still depend on virgin-fiber prices going higher, the development of a sorting infrastructure, and the kind of policy support SB 707 is now beginning to provide.

What You Can Do

At home and while shopping:

1. Focus on slowing down how often you buy new clothes, not just buying less. Choose better quality items and wear them for longer. If you double how long you wear each garment, you can cut its total emissions by about half.
2. Try to fix your clothes before replacing them. Local tailors, Repair Cafés, and repair programs from brands like Patagonia, Nudie Jeans, and Eileen Fisher can help you get more use out of what you already have.
3. Be honest when sorting your donations. Clean, up-to-date, and resaleable items should go to local thrift stores. Items that are stained or torn should go to textile-specific takeback bins at places like H&M or Madewell, where they can be properly processed.
4. Before putting anything in your curbside bin, use Earth911’s recycling search to find local textile drop-off locations by ZIP Code. Most curbside bins don’t accept clothing or textiles.

In your community:

1. Support textile extended producer responsibility (EPR) laws in your state. SB 707 is the example to follow, and the next few states to pass similar laws will help decide if this approach can grow.
2. Ask retailers to clearly label fiber content and recyclability. The EU will require digital product passports by 2027, and U.S. brands selling overseas will have to comply. Whether these labels appear in the U.S. depends on consumer demand.
3. Support and volunteer at local repair and reuse programs. Repair Cafés, Buy Nothing groups, and clothing swaps help reduce waste before it starts, which is the most effective way to make a difference.

The post Where Waste Comes From: Your Closet appeared first on Earth911.

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The ocean provides half the oxygen we breathe, absorbs 30% of our carbon emissions, and helps control the planet’s climate. By 2030, it’s expected to support a $3.2 trillion Blue Economy. Yet 70% of proven ocean solutions, such as coastal resilience, coral restoration, and marine pollution cleanup, never move past the pilot stage. These projects often win awards and get media attention, but then stall because funding systems don’t connect working ideas with the cities, ports, and coastal areas that need them. Stewart Sarkozy-Banoczy, co-founder and ocean lead at Okhtapus, wants to change that. Okhtapus, named with the Persian word for the octopus, uses a model that links what Stewart calls “the three hearts” of successful projects: innovators with proven solutions, cities and ports ready to use them, and funders looking for solid projects.

The first Okhtapus Global Replicator will launch in 2026. It will bring groups of proven innovators to work on important projects in specific places, such as a single port city like Barcelona, where Okhtapus already has strong partnerships, or a group of Caribbean islands facing similar problems. The aim is to have enough successful projects that funders stop asking “where are the deals?” and start saying “we’ve got enough.” The platform focuses on late-stage startups and scale-ups, not early-stage ideas. Stewart calls these the “Goldilocks zone”—solutions that are proven enough to copy but still need funding and partners to grow. By combining several solutions for different locations, Okhtapus can offer investors portfolios that fit their needs and make a real difference in cities, ports, and island nations.

Stewart has spent 20 years working where climate resilience and policy meet. He was part of President Obama’s Hurricane Sandy Rebuilding Task Force, led policy and investments at the Resilient Cities Network, and is now Managing Director of the World Ocean Council. “Ten years from now, if this is done fast enough,” Stewart said, “we should have pushed hard enough on the funders and the system to change it. What we don’t know is whether we’ll get to the solution status fast enough for some of these tipping points.”

To find out more about Okhtapus, visit okhtapus.org.

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Editor’s Note: This episode originally aired on December 22, 2025.

The post Best of Sustainability In Your Ear: Okhtapus Cofounder Stewart Sarkozy-Banoczy Accelerates Ocean Solutions appeared first on Earth911.

Editors’ Highlights are summaries of recent papers by AGU’s journal editors.

Source: Journal of Geophysical Research: Atmospheres

Abrupt temperature swings between consecutive days, referred to as day-to-day temperature variability, have far-reaching impacts on human health, ecosystems, and economic activity. However, how these fluctuations vary from year to year, and what drives them, has remained unclear.

Using observations, reanalysis, and CMIP6 simulations from 1961 to 2014, Liu and Fu [2026] identify a coherent large-scale pattern of variability across Eurasia and North America. This variability is primarily driven by the north–south movement of warm and cold air masses.

The dominant drivers also vary by season: large-scale meteorological patterns prevail in winter, whereas local land–atmosphere feedbacks become more influential in summer. Together, these processes reshape temperature gradients and modulate storm activity and broader weather systems.

Overall, the findings provide new insights into the mechanisms of temperature variability and offer a scientific basis for improving seasonal climate risk prediction and adaptation strategies.

Citation: Liu, Q., & Fu, C. (2026). Interannual variations in the day-to-day temperature variability in the northern hemisphere and possible causalities. Journal of Geophysical Research: Atmospheres, 131, e2025JD045754. https://doi.org/10.1029/2025JD045754

—Yun Qian, Editor, JGR: Atmospheres

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In 2022, Carleton University biologist, Grégory Bulté arrived at Opinicon Lake for his first day of field work for the season. Bulté has been studying and tracking northern map turtles since 2003, returning every spring to the lake.

As he went to retrieve his camera from the hibernation site, he spotted a dead turtle. He paddled towards it and then noticed another. Sightings of turtles with crushed shells and missing limbs continued. In his wetsuit, he swam the shoreline to pick up the carcasses, counting 142 in total —10 per cent of the total population.

This was the first time Bulté had witnessed a mass mortality like this. His research points to river otters accessing the hibernating turtles through holes in the ice.

It is uncertain how the holes in the ice formed. Climate change, human-made openings, and shifting ecosystems may be potential causes.

“We don’t have direct evidence that any cause led to this particular event. However, we thought it was important to publish this study, because what it did show, is that map turtles hibernate in such a way that it makes them vulnerable to fatality if something goes wrong,” said Bulté.

Ice protects turtles from predation. While there are no de-icing bubblers, which push bubbles into the water to stop it freezing around docks, next to the hibernation site at Opinicon Lake, Bulté has seen an increasing trend in their overall use.

“We are worried that without any regulation or knowledge of where map turtles spend their winters, we could decimate a population rapidly if these tools are put in close proximity,” said Bulté.

Since 2022, Bulté has not witnessed another mass mortality event. He is currently working alongside a statistician to analyze data from 2022 to 2026 to better understand how the population has been affected.

He believes that humans need to learn how to cohabitate better with wildlife.

“If we cannot keep them in their environment, what does that say about everything else we do to the environment?”

Ontario Nature’s Acting Conservation Science and Stewardship Director, Jenna Quinn emphasized that turtle species are at risk and cannot afford additional threats.

“It is important that we always move with nuance and understand that every action we take has a consequence,” said Quinn.

Work is being conducted to conserve the ecosystems that inhabit the turtles.

Ontario Nature’s Reptile and Amphibian Atlas (ORAA) is one tool that is currently being used to inform ongoing conservation work. It documents current knowledge of the distribution of reptiles and amphibians in the province, increasing public awareness and appreciation of these species.

Additionally, the Rideau Canal is a part of Preserving Legacies, a global organization dedicated to safeguarding heritage places and practices by advancing climate adaptation solutions that strengthen community resilience.

The canal is currently in its second phase of the project, which involves the creation of a comprehensive Risk Assessment that will be shared with the community.

Editors’ Highlights are summaries of recent papers by AGU’s journal editors.

Source: AGU Advances

The critical zone (CZ) refers to the layer of Earth extending from the bedrock up to the vegetation canopy, including interconnected systems such as river and floodplain corridors, the active soil and root zone, and the near-surface environment where plants interact with the atmosphere. The conservation of the CZ requires a detailed understanding of how it evolves under anthropogenic impacts, such as intensive agriculture.

Goodwell et al. [2026] use a data driven approach to relate shifts in the critical zone to indicators of human impact. Their findings deliver innovative knowledge on transitions, drivers, and predictability in many contexts, and support better prediction and management of the critical zone under environmental change.

In particular, the authors find evidence of abrupt shifts in the variability of key features like stream and soil chemistry, land-atmosphere interaction and so forth, which can be attributed to intensive management, for instance due to mechanized planting and harvesting. These human-impacted and naturally appearing regimes in the dynamics of critical zone have implications for understanding processes and making predictions of the status of the critical zone under environmental change.

Citation: Goodwell, A. E., Saccardi, B., Dere, A., Druhan, J., Wang, J., Welp, L. R., et al. (2026). Detecting regimes of critical zone processes, drivers and predictability with a data-driven framework. AGU Advances, 7, e2025AV002098. https://doi.org/10.1029/2025AV002098

—Alberto Montanari, Editor-in-Chief, AGU Advances

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