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Tuesday, March 26, 2019

Latest from Science News: A single sweaty workout may boost some people's memory

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03/26/2019

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A single sweaty workout may boost some people's memory

Mar 26 2019 6:00 AM

Memory improvements after a short bout of exercise mirrored those seen after months of training.

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Edibles are tied to more severe health issues than smoking marijuana

Mar 25 2019 5:25 PM

Most marijuana-linked cases at a Denver hospital involved weed smokers. But people who ate the drug were more likely to have heart or psych issues.

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Signs of new nerve cells spotted in adult brains

Mar 25 2019 12:00 PM

A study finds new evidence that adult brains grow new nerve cells, even the brain of an octogenarian.

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News in Brief

How a proton gets its spin is surprisingly complicated

Mar 25 2019 7:00 AM

Pinning down the source of protons' spin is surprisingly hard to do.

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Feature

Saber-toothed cats were fierce and family-oriented

Mar 24 2019 6:00 AM

New details shift the debate on whether Smilodon lived and hunted in packs, and answer questions about other behaviors and abilities.

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Women have a new weapon against postpartum depression, but it's costly

Mar 22 2019 2:32 PM

The newly approved drug brexanolone simulates a natural hormone to alleviate symptoms of postpartum depression.

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Science Visualized
U.S. fentanyl deaths are rising fastest among African-Americans
Mar 22 2019 1:17 PM

New statistics on fentanyl-related overdoses show troubling increases in deaths among African-Americans, Hispanics and men.

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The -est
The oldest known astrolabe was used on one of Vasco da Gama's ships
Mar 22 2019 6:00 AM

A navigational device for taking altitudes at sea was found in a Portuguese shipwreck in the Arabian Sea and dates back to 1496.

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Newfound fossils in China highlight a dizzying diversity of Cambrian life
Mar 21 2019 2:36 PM

A new treasure trove of Cambrian fossils in China dating to 518 million years ago could rival Canada's Burgess Shale.

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Saving monkey testicle tissue before puberty hints at a new way to preserve fertility
Mar 21 2019 2:26 PM

Frozen testicle tissue samples from prepubescent monkeys transplanted back onto those monkeys once they matured produced sperm.

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A new ketamine-based antidepressant raises hope - and questions
Mar 21 2019 7:00 AM

Little is known about the long-term effects on people of a newly approved antidepressant based on the anesthetic ketamine.

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News in Brief
Ryugu is probably a chip off one of these two other asteroids
Mar 20 2019 3:20 PM

Japan's Hayabusa2 team has narrowed down the asteroid Ryugu's origins based on its color.

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X-ray 'chimneys' connect the Milky Way to mysterious gamma-ray bubbles
Mar 20 2019 2:00 PM

Two columns of X-rays that are hundreds of light-years long could explain the existence of giant bubbles of energetic light that sandwich the galaxy.

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News in Brief
In a first, a fossilized egg is found preserved inside an ancient bird
Mar 20 2019 6:00 AM

Scientists have found the first known fossil of a bird that died with an unlaid egg inside its body. The egg has been crushed by pressure over time.

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Surprising astronomers, Bennu spits plumes of dust into space
Mar 19 2019 2:55 PM

Bennu spews dust from its rocky surface, which may be a new kind of asteroid activity.

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The learning gap between rich and poor students hasn't changed in decades
Mar 19 2019 10:11 AM

The educational achievement gap between the poorest and richest U.S. students remains as wide as it was almost 50 years ago.

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