"It's time to address airborne transmission of COVID-19," declared 230 scientists in a recent letter. One of them explains what that means in practical terms.

Which masks work best against the coronavirus? What are the best materials for homemade masks? New research puts face masks head-to-head.

"People who say, 'I don't believe masks work' are ignoring scientific evidence. It's not a belief system. It's like saying, 'I don't believe in gravity.'"

New research with rhesus monkeys indicates brain and behavior problems resulting from Zika virus infection soon after birth.

As researchers learn more about COVID-19 and how it affects kids, they warn parents to be on the lookout for symptoms of multiple inflammatory syndrome.

As researchers learn more about COVID-19 and how it affects kids, they warn parents to be on the lookout for symptoms of multiple inflammatory syndrome.

A new "coronavirus family tree" has given researchers a better look at how COVID-19 came into Denmark and how it spread domestically.

A new survey shows a majority of parents will likely send their kids back to school this fall and support measures to help keep kids safe from COVID-19.

A new synthetic antibody may prevent the coronavirus from causing infection by blocking attachment to a key enzyme. It shows promise in a study with mice.

"I was skeptical at the beginning because it seemed too good to be true. But when I saw the first set of results in the lab, I was just astonished."