New sunscreen won’t seep into the skin

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A new sunscreen doesn’t penetrate the skin, which could eliminate the health concerns associated with its commercial alternatives. Most commercial sunblocks are good at preventing sunburn, but they can go below the skin’s surface and...

Hot bodies reveal where Pacific bluefin tuna eat

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Scientists have developed a new way to measure how and when ocean predators consume prey, and they’ve used it to identify the Pacific bluefin’s favorite hot spots. The findings could help design better conservation policies to help a...

Why the next hurricane might flood New York City

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Whether or not a coastal city floods during a hurricane depends on the storm, tide, and sea level. For New York City, the effects of climate change on storm size and sea levels have...

Placebos may predict if antidepressants will work

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When it comes to treating depression, how well a person responds to a placebo may determine how well they’ll respond to a real medication, new research finds. People who can muster their brain’s own chemical...

Medieval chivalry wasn’t just knights and valor

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Our popular ideas of the chivalric world are off base, according to historian Richard Kaeuper. The gallant knights on horseback and banners unfurling before exciting tournaments largely come from people in the 19th century...

How an ‘atlas’ of living organs could save lives

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After an accident, a patient was rushed into surgery and, from there, into the intensive care unit, where he was recovering. But, days later, one by one, his organs failed. The patient didn’t survive....

Streaks are ‘strongest evidence yet’ of Mars water

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Scientists have discovered what they say is the strongest evidence yet that there is intermittent flowing liquid water on modern Mars. Using instruments on board NASA’s Mars Reconnaissance Orbiter (MRO), researchers measured spectral signatures of...

How Rosetta’s comet got its shape

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Two comets collided at low speed in the early Solar System to give rise to the distinctive ‘rubber duck’ shape of Comet 67P/Churyumov–Gerasimenko, say Rosetta scientists. The origin of the comet’s double-lobed form has been...

Fewer flowers mean bumblebee tongues are shrinking

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Rising temperatures in mountains around the world have led to a decline in flowers—which has in turn led to a decline in bumblebee populations. But two species have figured out a way to survive: They...

This brain region manages your daily routine

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If you sometimes feel like you have a little manager in your head who keeps you on track while you work step-by-step through a sequence of tasks, you aren’t far off. A new study reports...
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