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60,000-year-old poison arrowheads show early humans’ hunting tactics

Throughout history, hunters have coated their dart tips and arrowheads with poison to make them even more deadly. Our prehistoric ancestors, it seems, devised this strategy surprisingly early. A fresh…

Large numbers of underage kids are on social media, study finds

Most social media companies claim they require their sites’ users to be at least 13 years old. But no surprise, younger kids use the sites, too. In fact, a majority…

Got brain rot?

Who’s your favorite brain rot? Maybe it’s Tralalero Tralala, a shark wearing three sneakers. Or Tung Tung Tung Sahur, a log holding a baseball bat. These ridiculous AI-generated characters show…

Stressed by tech? Here’s how to find help

For most of us, tech is a regular part of our daily lives. With a few clicks, it can bring us welcome information, entertainment and access to friends or like-minded…

This engineer designed a device to make farm work easier

Mechanical engineer Juan Espinoza’s work in agriculture runs deep. In the 1990s, his parents immigrated to California from Mexico. With little formal education, the only work available to them at…

A bonobo’s imaginary tea party hints that apes can pretend

Humans may not be the only primates with the power to imagine. A bonobo named Kanzi recently showed that he could keep track of make-believe juice and grapes during a…

Scientists Say: Bolide

Bolide (noun, “BOH-lyde”) A bolide is a bright meteor. Usually, this word describes meteors that explode in the atmosphere. A bolide’s extreme brightness sets it apart from other meteors. Astronomers…

The sea surface covered by seaweed is now as big as South America

What can stink up a beach, stall a boat and ruin a vacation? Too much seaweed. Floating mats of algae now cover a huge swath of the globe’s oceans. And…

Why do objects shatter the same way? Math solves the mystery

When an object shatters, something strange happens. It doesn’t matter whether the object is a dropped glass or plate. Or the nucleus of one atom smashing into another. Or even…

The Okefenokee’s dark waters hold secrets about climate and more

It’s quiet in the Okefenokee. Cypress trees, draped with Spanish moss, loom over the dark water of this swamp in southeastern Georgia. But look closely and that stillness reveals signs…