Earth
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Science & Society
CO2 emissions have nosedived as COVID-19 keeps people home
The COVID-19 pandemic restricted travel that can pollute the air. By April, travel-related daily emissions of greenhouse gases was back to 2006 levels.
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Environment
Pesticides can have long-term impact on bumblebee learning
Pesticide-laced nectar and pollen can permanently harm the brains of baby bumblebees.
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Earth
Did rain put the Kilauea volcano’s lava-making into overdrive?
Scientists share strongly conflicting opinions about why Hawaii’s Kilauea volcano spewed an overabundance of lava in 2018.
By Megan Sever -
Earth
Let’s learn about earthquakes
Dozens of quakes happen every day, but most aren’t big enough for people to notice.
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Earth
A rainforest once grew near the South Pole
A forest flourished within 1,000 kilometers of the South Pole. That was a while ago, as in millions of years ago.
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Materials Science
This ‘living’ concrete slurps up a greenhouse gas
Microbes help harden a mix of sand and gelatin into a living concrete that could interact with people and the environment in great new ways.
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Earth
Scientists Say: Jurassic
During this time from about 200 million to 145 million years ago, dinosaurs reigned and many animals evolved, including birds and some early mammals.
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Physics
Explainer: Rainbows, fogbows and their eerie cousins
Light shining through a water droplet can make more than just a rainbow. A range of other colorful arcs also can develop.
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Health & Medicine
How to find the next pandemic virus before it finds us
Wild animals carry viruses that can sicken people. Monitoring those viral hosts that pose the greatest risk might help prevent a new pandemic.
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Climate
Climate change drove Australian wildfires to extremes
Australia’s devastating 2019–2020 wildfires were at least 30 percent more likely because of human-caused climate change.
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Climate
How to curb the climate heating by contrails
Contrails are narrow clouds left behind in the sky by jets. They add to climate change. But a new study suggests a way to curb their contribution.
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Tech
Here’s one way to harvest water right out of the air
Need water but you have no access to rain, lakes or groundwater? Materials known as metal-organic frameworks could be used to slurp that water from the air, new data show.
By Sid Perkins