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New model could explain mysterious cycle behind sunspots
A new model of plasma motion could explain the 11-year cycle behind sunspots and several other previously mysterious properties of the sun, researchers report. For 400 years people have tracked...
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Did life on Earth start in ‘soda lakes’?
New research may solve a problem with some theories of the origins of life on Earth. Life as we know it requires phosphorus. It’s one of the six main chemical elements of life, it forms the backbone of...
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Tiny meteorites shed light on Earth’s early atmosphere
Very old samples of small meteorites show that they could have reacted with carbon dioxide on their journey to Earth, researchers report. Previous work suggested the meteorites ran into oxygen,...
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Sea ice loss led to skinnier polar bears and fewer cubs
Due to reduced sea ice, polar bears in Baffin Bay are getting thinner, having fewer babies, and spending more time on land than they did in the 1990s, new research shows. The new study in Ecological...
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Ship emissions can change the clouds
Emissions from ships can change the clouds near their routes, researchers report. The new research is the first to measure this phenomenon’s effect over years and at a regional scale. Satellite data...
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Climate change may spark more Pacific Northwest wildfires
A new study takes a big-picture look at what climate change could mean for wildfires in the Northwest. Many have questioned what the fires—including the Carlton Complex Fire in 2014, the largest in...
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U.S. farm workers will see unsafe hot days double by 2050
Agricultural workers will see harsh summertime weather conditions worsen significantly in the coming decades, researchers report. Their new study looks at temperature increases in counties across the...
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Antarctica, Greenland losing 318 gigatons of ice a year
Loss of ice from Antarctica and Greenland’s shrinking ice sheet is responsible for 0.55 inches (14 millimeters) of sea level rise since 2003, according to a new study. Using the most advanced...
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Warming oceans choke fish as habitats get less ‘breathable’
The ability of marine animals to thrive in ocean water off the West Coast from Mexico to Canada may depend on how “breathable” the water is, new research shows. The cool, nutrient-rich water of the...
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Most common ocean organisms host virus in DNA
The most common group of organisms in the ocean and perhaps on the entire planet thrives despite of, or perhaps because of, the ability to host viruses in their DNA, report researchers. Part of the...
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Volcanoes may have shaped oxygen’s evolution on Earth
Volcanic gases and the planet’s mantle may have held back oxygen’s rise on Earth, researchers say. Oxygen first accumulated in the Earth’s atmosphere about 2.4 billion years ago, during the Great...
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China’s lockdown cut some air pollution, but not all
The February lockdown in China due to the COVID-19 pandemic caused a drop in some types of air pollution, but not others, according to new research. The near-total mobility shutdown resulted in a...
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Thinner sea ice benefits some polar bears, but for how long?
Despite warming conditions, a small subpopulation of polar bears that live far above the Arctic Circle are, on average, healthier than they were in the 1990s, a new study shows. The roughly 300 to 350...
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Flights into wildfire plumes could make smoke forecasts better
Wildfire smoke forecasts may incorrectly predict the amount of particles in staler smoke, according to a new study. Researchers made their find by tracking and flying through wildfire plumes to collect...
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AI could mine the past for faster, better weather forecasts
Artificial intelligence can analyze past weather patterns to predict future events, much more efficiently and potentially someday more accurately than today’s technology, researchers say. Today’s...
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Endangered blue whales are singing in the Indian Ocean
Endangered blue whales are present and singing off the southwest coast of India, research shows. The findings suggest conservation measures should include this region, which is considering expanding...
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Climate change threatens the Arctic’s ‘Last Ice Area’
Parts of an Arctic region called the Last Ice Area are already showing a decline in summer sea ice, researchers report. In a rapidly changing Arctic, the area might serve as a refuge—a place that could...
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Model predicts 10-year burst of wildfire, then gradual decline
A look at the long-term future of wildfires predicts an initial roughly decade-long burst of wildfire activity, followed by recurring fires of decreasing area. In recent years, wildfires on the West...
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Dry, warm air boosts nighttime wildfire activity
Drier, warmer night air is making some Western wildfires more active at night, researchers report. Firefighters report that Western wildfires are starting earlier in the morning and dying down later at...
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Were ancient volcanoes behind Earth’s first whiff of oxygen?
Volcanic eruptions may have stimulated population surges of marine microorganisms, creating the first puffs of oxygen into the atmosphere, a new analysis of 2.5-billion-year-old rocks from Australia...
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