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Planetary ScienceChina’s moon rover revealed what lies beneath the lunar farside
China’s Yutu-2 rover found layers of fine sand and coarse gravel under the surface of the moon’s farside.
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HumansEvolving an arch across the foot’s width helped hominids walk upright
The arch across the foot evolved at least 3.4 million years ago, possibly before the lengthwise arch. Both arches help humans to walk and run.
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ClimateOrdering from a local store can curb online shopping’s CO₂ emissions
Online shopping isn’t necessarily better for the environment than going to the store in person, a new study finds.
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Health & MedicineCoronavirus’ spread in the U.S. may be a question of when, not if
The virus that causes COVID-19 is likely to gain a foothold in U.S. communities, says the US Centers for Disease Control and Prevention.
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Health & MedicineWe may be on the brink of a coronavirus pandemic. Here’s what that means
The coronavirus behind COVID-19 has not yet reached pandemic status, according the WHO, but we could be close.
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ArchaeologySouth Asian toolmaking withstood the biggest volcanic blast in 2 million years
Toolmakers continued to strike sharp-edged flakes as usual after a volcano’s colossal eruption around 74,000 years ago on what’s now Sumatra Island.
By Bruce Bower -
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Readers respond to Notre Dame’s uncertain future
Readers had questions about Notre Dame cathedral, memory and more
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ClimateHow scientists wrestle with grief over climate change
With climate change altering our world at an increasing pace, scientists who monitor and study nature are frustrated and grieving.
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SpaceNASA icon Katherine Johnson has died at the age of 101
The “Hidden Figure” captured the public’s admiration after the story of her career was publicized in a 2016 book and film.
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LifeA distant cousin of jellyfish may survive without working mitochondria
A tiny creature that parasitizes salmon is the first known multicellular eukaryote without a mitochondrial genome, a hallmark of complex life.
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SpaceWhat NASA’s InSight lander has learned about Mars’ magnetism and quakes
In its first 10 months, the InSight lander detected Marsquakes and an unexpectedly strong magnetic field at its landing site on the Red Planet.