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Health & MedicinePeople who didn’t know they had COVID-19 drove its spread in China
A new study suggests that mild cases, in which people have no symptoms or don’t get sick enough to go to a doctor, are fueling the coronavirus pandemic.
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ClimateHow Hurricane Maria’s heavy rains devastated Puerto Rico’s forests
Hurricane Maria wreaked havoc on Puerto Rican forests in some unexpected ways.
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PhysicsHow slime mold helped scientists map out the cosmic web
Tapping a similarity between a slime mold’s lacy web and the vast threads of matter that connect galaxies, astronomers visualized the cosmic web.
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ArchaeologyThis is one of the largest Ice Age structures made of mammoth bones
A massive ring of mammoth bones, built by hunter-gatherers during the Ice Age, offers a peek at life 25,000 years ago.
By Bruce Bower -
Planetary ScienceThe asteroid Ryugu has a texture like freeze-dried coffee
Only about half of the asteroid Ryugu is rock; the rest is airy holes, a finding that could help reveal details of how the planets formed.
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Artificial IntelligenceAn AI that mimics how mammals smell recognizes scents better than other AI
An artificial intelligence modeled after the neural circuitry in mammalian brains can keep learning new aromas without forgetting others.
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Health & MedicineCoronavirus is most contagious before and during the first week of symptoms
As major efforts to contain the COVID-19 pandemic go into effect around the globe, researchers are figuring out just when patients are most contagious.
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ArchaeologyAn ancient ball court sheds light on a game made famous by the Aztecs
A 3,400-year-old ball court in the southern mountains of Mexico suggests many societies contributed to the development of an ancient, well-known Mesoamerican ball game.
By Bruce Bower -
Health & MedicineA trick from cancer cells helps rats accept transplanted limbs
Rats that received microparticles that release a chemical signal to recruit immune cells tolerated hind limb transplants for more than 200 days.
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Genetics‘Human Nature’ offers CRISPR novices a basic introduction
A film that introduces people to CRISPR aims to spark debate about how to use the gene editor.
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Health & MedicineSocial distancing, not travel bans, is crucial to limiting coronavirus’ spread
Everything from waving hello instead of shaking hands to cancelling large gatherings of people will help slow the spread of COVID-19.
By Jonathan Lambert and Tina Hesman Saey -
Health & MedicineCruise ship outbreak helps pin down how deadly the new coronavirus is
Infections and deaths on the Diamond Princess suggest that, in the real world, 0.5 percent of COVID-19 infections in China end in death.