Science

Twice a day, like clockwork, people release balloons around the world at the same time. These balloons are scientific tools, and the people releasing them are meteorologists.

Everyone has a set of genes that keeps the body on a 24-hour rhythm. As we get older, though, the main clock can malfunction. Researchers say a backup clock may try to compensate.

Scientists have been studying reactions to terrorist events, and how those reactions shape public policy. They found emotional response to terror attacks is often out of proportion to actual risk.

Months after an American dentist shot and killed a beloved African lion named Cecil, the Obama administration moves to protect lions in Africa through the Endangered Species Act.

Why doesn't the winter solstice have the earliest sunset of the year? NPR's Ari Shapiro explores that and other fun celestial news with NPR blogger Adam Frank.

These days, every character counts — nowhere more than at the end of your text messages. Researchers have found that punctuating a text with a period can make it seem as if you're being insincere.