Uncategorized
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Health & Medicine
The FDA says don’t buy young plasma therapies. Here’s why
Infusions of plasma from young people may hold the secret of youth, but there’s not much evidence to support the idea yet.
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Planetary Science
Hayabusa2 just tried to collect asteroid dust for the first time
The Japanese Hayabusa2 spacecraft touched down on asteroid Ryugu and attempted to gather a sample of its rock to bring back to Earth.
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Astronomy
Colliding neutron stars shot a light-speed jet through space
A stream of particles created in a neutron star crash, detected in 2017 using gravitational waves, could explain certain mysterious flashes of light.
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Anthropology
African hominid fossils show ancient steps toward a two-legged stride
New Ardipithecus ramidus fossils reveal how hominids were shifting toward humanlike walking more than 4 million years ago.
By Bruce Bower -
Physics
Supernovas show the universe expands at the same rate in all directions
Analyzing supernovas indicates that expansion rates agree within 1 percent across large regions of sky.
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Health & Medicine
A ban on artificial trans fats in NYC restaurants appears to be working
New Yorkers’ levels of artificial trans fats dropped, especially in people who ate out the most, after a citywide ban on the fats in restaurant foods.
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Animals
The world’s largest bee has been rediscovered after 38 years
Researchers rediscovered the world’s largest bee living in the forests of an island of Indonesia.
By Jeremy Rehm -
Climate
Dueling dates for a huge eruption reignite the debate over dinosaurs’ death
New dating techniques for the Deccan Traps volcanic eruptions disagree on whether they were the main culprit in the dinosaurs’ demise.
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Paleontology
A deer-sized T. rex ancestor shows how fast tyrannosaurs became giants
A newly found dinosaur called Moros intrepidus fills a hole in the evolutionary history of tyrannosaurs, helping narrow when the group sized up.
By Jeremy Rehm -
Chemistry
Why kids may be at risk from vinyl floors and fire-resistant couches
Children from homes with all vinyl floors and flame-retardant sofas show higher levels of some synthetic chemicals in their bodies than other kids.
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Artificial Intelligence
Why a data scientist warns against always trusting AI’s scientific discoveries
Artificial intelligence that helps make scientific discoveries needs to get better at admitting its uncertainty, Genevera Allen says.
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Planetary Science
Neptune’s smallest moon may be a chip off another moon
Neptune’s tiniest moon probably formed when a comet hit a larger moon.