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Extreme rainfall might set off volcanoes that are ready to blow. A pair of scientists think that's what happened at Hawaii's Kilauea volcano in 2018, though some volcanologists are doubtful.

Not only are a higher percentage of patients men than women, but they seem to suffer more severe symptoms. And they may be less likely to go in for testing.

Bits of twisted plant fibers found on a stone tool show that Neanderthals used sophisticated yarns and cords. It pushes the date of the earliest-known fiber technology way back in time.

The CDC issued a guide for when critical workers exposed to COVID-19 should return to their jobs. It should make it easier for essential workers, who are not in health care, to stay on the job.

Men appear to be more likely to die from COVID-19 than women. Scientists have theories — women may have better immune systems, or sex hormones may play a role in the body's response to infection.

Numbers emerging from a few cities and states suggest higher death rates for African-Americans from COVID-19. The findings also reveal deeper disparities.

Simply talking could produce tiny particles of mucus and saliva that might carry the coronavirus, experts say. How much these airborne particles matter for the spread of this disease is controversial.

A scientific brief from the World Health Organization says "current evidence" points to infectious respiratory droplets passed in "close contact" situations, but some say it's too soon to be sure.

President Trump said Thursday that the U.S. is doing "tremendous" testing. But the truth is the country still lags far behind what's needed.

Usually in health emergencies — HIV, vaping and more — the Centers for Disease Control and Prevention is key to shaping policy and explaining it. That's changing to America's detriment, leaders say.

The hope is that a person who has recovered from COVID-19 would have some protection against reinfection in the future. Here's what researchers do — and don't — know.

Modelers of epidemics at Imperial College of London now say months of strict social distancing may be needed to prevent overwhelming the U.S. health care system with COVID-19 cases.

The U.S. has an $8 billion stockpile of emergency medical supplies that is the envy of the world. But the vast collection will be of only limited use in the fight against the new coronavirus.

The data from China offer insights into the way different age groups are affected after being infected.

As the world watches the outbreak of a novel coronavirus, epidemiologists are watching simulations of that outbreak on their computers to try to predict what might happen next.

More labs will soon have the ability to test sick people for the novel coronavirus, and experts say they'll finally have more of a sense of how it's spreading through communities in the U.S.

The latest batch of new emojis is coming soon and it contains some wins for science-lovers. But scientists have mixed feelings about some of the new images from nature.

The Trump administration keeps repeating that the U.S. will return humans to the moon in 2024. That may be technically possible, but only if the money appears and if everything goes perfectly.

The U.S. government this week is pondering how much the public needs to know about funding decisions for studies and experiments that involve tinkering with already dangerous viruses.

Some wolf puppies will unexpectedly play "fetch," researchers say, showing that an urge to retrieve a ball might be an ancient wolf trait and not a result of dog domestication.