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Health & MedicineAnalyze This: Most teen girls don’t meet guidelines for daily exercise
Girls trail boys in the amount of exercise they tend to get each day regardless of race.
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BrainMarijuana use may affect decision-making areas in teen brains
Marijuana use during adolescence may damage decision-making areas of the brain, according to a new study in rats.
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BrainScientists Say: Opioid
Opioid drugs work in the brain to stop pain. But the drugs also produce pleasure, which can make people want to take them over and over again.
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EarthSoggy cereal gives clues to how rock dams collapse
To find out how ice sheets move and rock dams collapse, two researchers turned the attention to breakfast cereal.
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EcosystemsWelcome to the Arctic’s all-night undersea party
Life teems in the frozen darkness of the Arctic night. But as the ice recedes and people move in, their light pollution may disturb the animals living there.
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EarthA massive crater hides under Greenland’s ice
Radar images point to a crater buried deep under ice in Greenland. Meltwater from the site suggest an asteroid created it. Did this collision trigger a thousand-year global cooling?
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ChemistryThis rewritable paper depends on disappearing ink
Scientists have made a new rewritable paper that can hold text and images for at least six months. It also can be reused more than 100 times.
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EnvironmentHere’s the science you loved in 2018
When our readers read about science, they want to read about research that hits close to home, like smartphones, chocolate, vaping and more.
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EnvironmentICYMI: 2018’s top science offerings
From gene-edited babies to firenados and lavanados, this year offered both stunning news and curiosities in the world of science and research.
By Janet Raloff -
Health & MedicineWhat makes Aquaman special? He can take a lot of pressure
The new Aquaman movie makes life under the sea look pretty glamorous. In fact, we puny humans probably couldn’t take the pressure.
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Health & MedicineKeeping an irregular schedule may change how many calories you burn
Our daily cycle of calorie burning is one of many body processes that follow a biological clock.
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OceansThis robotic jellyfish is a climate spy
Scientists have developed a robotic jellyfish to collect data about the ocean. It’s small and nimble, and gentle on marine ecosystems.