Earth's Systems
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Climate
Explainer: What is an atmospheric river?
These long-traveling storm systems bring moisture to many parts of the world. Here’s what scientists are learning about them.
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Earth
A natural ‘cathedral’ lurks deep under Antarctic ice
By drilling into this cavern, scientists have opened a window into the mysterious world of hidden lakes, their occupants — and rivers that run uphill.
By Douglas Fox -
Earth
Under the ice, a hidden lake hints at its origin — and coming end
Lake Mercer may serve as a model for better understanding the birth and life of Antarctica’s hundreds of subglacial lakes.
By Douglas Fox -
Agriculture
Native Amazonians make rich soils — and ancient people may have too
Modern Amazonians make nutrient-rich soil from ash, food scraps and burns. The soil strongly resembles ancient “dark earth” found in the region.
By Freda Kreier -
Tech
Think of this new tech as sunglasses for our windows
Keeping buildings cool can use a lot of energy. Thanks to quantum computing, engineers designed a coating to cut the warming light that enters windows.
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Animals
A love of small mammals drives this scientist
Alexis Mychajliw’s science is driven by her love of animals. She now looks to tar pits and fossilized poop to understand ancient ecosystems.
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Earth
Scientists Say: Seismology
Seismology is the branch of science focused on seismic waves — vibrations that run through or around Earth.
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Environment
Gas stoves can spew lots of pollution, even when they’re turned off
A new study finds they can leak benzene and other harmful chemicals into homes, sometimes at very high levels.
By Laura Allen -
Earth
Analyze This: Salt may quash lightning over the sea
Bits of airborne salt may help raindrops form, removing water from clouds before it can freeze as part of the process that makes lightning.
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Physics
How salty does the sea have to be for an egg to float?
Some objects float on top of the ocean, and other objects sink to the bottom. Why? Try this eggs-periment to find out!
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Climate
Explainer: What is decarbonization?
Lowering carbon levels in our atmosphere to stabilize the climate may start with switching from fossil fuels to greener energy sources.
By Laura Allen -
Physics
Explainer: What is friction?
The force of friction always acts to slow things down. It depends on just two factors: the surfaces and how hard they press together.
By Trisha Muro