This photo provided by NASA shows the view from NASA's Andrew Morgan's helmet cam as Italian astronaut Luca Parmitano works outside the International Space Station during a spacewalk Saturday.
Roughly 1 in 10 infants were born prematurely in the U.S. in 2018, according to the Centers for Disease Control and Prevention. The drug Makena is widely prescribed to women at high risk of going into labor early, though the latest research suggests the medicine doesn't work.
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The Doomsday Clock reads 100 seconds to midnight, a decision made by the Bulletin of the Atomic Scientists that was announced Thursday. The clock is intended to represent the danger of global catastrophe.
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This chicken from Memphis Meats was produced with cells taken from an animal and grown into meat in a "cultivator." The process is analogous to how yeast is grown in breweries to produce beer.
H5N1 bird flu virus is the sort of virus under discussion this week in Bethesda, Md. How animal viruses can acquire the ability to jump into humans and quickly move from person to person is exactly the question that some researchers are trying to answer by manipulating pathogens in the lab.
SPL/Dr. Klaus Boller/Science Source
Generics may not have the same cost-lowering power for specialty medicines, such as multiple sclerosis drugs, researchers find. That's true especially when other brand-name drugs are approved to treat a given disease before the first generic is approved.
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Levi Draheim, 11, wears a dust mask as he participates in a demonstration in Miami in July 2019. A lawsuit filed by him and other young people urging action against climate change was thrown out by a federal appeals court Friday.
Scientists put several litters of wolf puppies through a standard battery of tests. Many pups, such as this one named Flea, wouldn't fetch a ball. But then something surprising happened.
Christina Hansen Wheat