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Latest from Science News: Rules guarding other planets from contamination may be too strict

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10/29/2019

  
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Rules guarding other planets from contamination may be too strict

Oct 29 2019 6:00 AM

Voluntary international guidelines for visiting the moon, Mars and other places - and for bringing stuff back to Earth - are overly cautious, scientists say.

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Humans' maternal ancestors may have arisen 200,000 years ago in southern Africa

Oct 28 2019 12:00 PM

New DNA findings on humankind's maternal roots don't offer a complete picture of how and when Homo sapiens emerged.

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The solar system may have a new smallest dwarf planet: Hygiea

Oct 28 2019 12:00 PM

New images reveal Hygiea is round, a final criterion for promoting the wee world from asteroid to dwarf planet status.

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Bird eggs laid in cold climates are darker, which may keep eggs warm

Oct 28 2019 12:00 PM

A global survey of bird egg color reveals a simple trend: the colder the climate, the darker the egg.

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Dating questions challenge whether Neandertals drew Spanish cave art

Oct 28 2019 6:00 AM

A method used to date cave paintings in Spain may have overestimated the art's age by thousands of years, putting its creation after Neandertal times.

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Congolese giant toads may mimic venomous snakes to trick predators

Oct 25 2019 8:00 AM

If Congolese giant toads mimic venomous Gaboon vipers, it would be the first reported case of a toad imitating a snake.

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More Recent Headlines
Quarrying stone for Easter Island statues made soil more fertile for farming
Oct 25 2019 6:00 AM

Easter Island's Polynesian society grew crops in soil made especially fertile by the quarrying of rock for large, humanlike statues, a study suggests.

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Bias in a common health care algorithm disproportionately hurts black patients
Oct 24 2019 2:00 PM

A machine-learning program that uses past medical costs to identify patients for extra care favors white patients over black patients, a study finds.

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Remarkable fossils capture mammals' recovery after the dino-killing asteroid
Oct 24 2019 2:00 PM

A fossil-rich site in Colorado is revealing how mammals rebounded and flourished after an asteroid strike 66 million years ago.

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Lab-grown organoids are more stressed-out than actual brain cells
Oct 24 2019 12:26 PM

Compared with real brain tissue, organoids show big differences.

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Piranhas and their plant-eating relatives, pacus, replace rows of teeth all at once
Oct 24 2019 6:00 AM

Piranhas and pacus both lose and replace all teeth on one side of their mouths in one go, which may help to distribute wear and tear.

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Strontium is the first heavy element detected from a neutron star merger
Oct 23 2019 1:00 PM

The discovery of strontium created inside a neutron star smashup gives the clearest picture yet of what goes on inside this chaotic environment.

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Algae inside blood vessels could act as oxygen factories
Oct 23 2019 10:43 AM

Two types of light-responsive algae make oxygen inside tadpoles' blood vessels.

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Google officially lays claim to quantum supremacy
Oct 23 2019 4:33 AM

The quantum computer Sycamore reportedly performed a calculation that even the most powerful supercomputers available can't reproduce.

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Aye-ayes just got weirder with the discovery of a tiny, sixth 'finger'
Oct 22 2019 4:25 PM

Aye-ayes have a sixth "finger," or pseudothumb, that may compensate for other, overspecialized fingers by helping the lemurs grip things.

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Prozac proves no better than a placebo in treating kids with autism
Oct 22 2019 3:00 PM

In a small clinical trial, drugs called selective serotonin reuptake inhibitors didn't ease obsessive-compulsive symptoms in children with autism.

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