On a summer day, a telltale drop of sweat tickles down your back. Next thing you know, sweat is running off you in rivers and your shirt is soaked. A…

A beautiful menace is on the move in the United States. Polka-dotted, red-and-gray-winged insects are gliding along sidewalks, climbing over plants and crawling up buildings. Spotted youngsters are leaping away…

Maybe your Pomeranian is a little too into the chicken jockey scene in A Minecraft Movie. Or your pit bull may seem excited for the next season of Wednesday. Really,…

What has a bed but doesn’t sleep, a mouth but doesn’t speak, and a bank but no money? A river! Rivers are big, natural flows of water that snake across…

At an ancient rock shelter in central Spain, archaeologists have unearthed a stone marked by a unique red dot. That spot — made using red ochre, a natural pigment —…

Biodiversity (noun, “By-oh-div-ER-sit-ee”) Biodiversity describes the variety of species in a region. This includes all forms of plant, animal, fungi and microbial life. Biologists estimate biodiversity a few different ways.…

Rip off a piece of tape in a dark room and you may see a flash of light. This happens because the peeling tape releases energy that creates tiny sparks.…

First, swaddle a fruit fly or other tasty prey in silk. Then barf toxins all over it. That’s how one type of spider prepares to dine. Giulia Zancolli recalls the…

You wake up and yawn, then put on a special pair of glasses. As you’re getting ready for the day, a friend calls. The glasses project an image of your…

For many teens, Saturday mornings are a time to snooze. After a week of getting up early, the weekend brings a chance to catch up on much-needed slumber. And sleeping…