Humans

Close relatives of the coronavirus may have been in bats for decades

Viruses from the coronavirus lineage responsible for COVID-19 have been circulating in...

Boosting a liver protein may mimic the brain benefits of exercise

Exercise’s power to boost the brain might require a little help from...

Protein from blood of exercising mice rejuvenates brains of ‘couch potato’ mice

It’s well established that exercise can sharpen the mind: People and mice...

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Planets with hydrogen-rich atmospheres could harbor life

Microbes can live and grow in an atmosphere of pure hydrogen, lab experiments show. The finding could widen the range of environments...

Is the coronavirus mutating? Yes. But here’s why you don’t need to panic

In novels and movies, infectious pathogens mutate and inevitably become more dangerous. In the blockbuster movie Contagion, for instance, a deadly virus...

A squid fossil offers a rare record of pterosaur feeding behavior

A fossil of a squid with a pterosaur tooth embedded in it offers extraordinary evidence of a 150-million-year-old battle at sea. While...

New telescopes could help spot ‘photon ring’ of the first black hole ever imaged

Faint rings of light surrounding enormous black holes could be spotted with the help of a future generation of telescopes in space.

A new artificial eye mimics and may outperform human eyes

Scientists can’t yet rebuild someone with bionic body parts. They don’t have the technology. But a new artificial eye brings cyborgs one...

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Fewer worms live in mud littered with lots of microplastics

Despite growing concerns over tiny bits of plastic filling the world’s waterways, the long-term environmental effects of that debris remain murky. Now...

Fossil fuel use may emit 40 percent more methane than we thought

Using fossil fuels releases much more of the potent greenhouse gas methane than previously thought — possibly 25 to 40 percent more,...

Climate change made a southwestern U.S. drought one of the worst in 1,200 years

The drought in southwestern North America that lasted from 2000 to 2018 is among the most severe to strike the region in...

Black hole plasma jets are shaped like bell-bottoms

Jets of high-energy plasma shooting away from supermassive black holes resemble bell-bottom pants — starting out narrow but ending with a flare....

A new 3-D map illuminates the ‘little brain’ within the heart

The heart has its own “brain.” Now, scientists have drawn a detailed map of this little brain, called the intracardiac nervous system,...