Scientists finally solved the centuries-long mystery of where a starfish's head is

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A person holding a five-pointed starfish.
Genetics suggests sea stars have a head in each limb. Does that mean they have multiple brains, too?

Stefan Cristian Cioata / Getty Images

An 8.7 million-year-old ape skull suggests that human and ape ancestors may have evolved in Europe, not Africa

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Conceptual X-ray image of human evolution.

Nick Veasey/Science Photo Library

The early ancestors of humans were reduced to 1,300 individuals and came close to extinction, scientists say

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Homo heidelbergensis,
This evolutionary bottleneck might have led to the emergence of a new species, Homo heidelbergensis,

(Photo by Cristina Arias/Cover/Getty Images

A mysterious 40,000-year-old hip bone suggests human ancestors and Neanderthals shared a cave — and perhaps a culture

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blond child grimaces nose to nose with a wax sculpture of neanderthal leaning on a stick
A child looks into the eyes of a model Neanderthal at the Neanderthal Museum in Germany. Scientists think they've uncovered evidence early European humans may have shared a cave with Neanderthals, and maybe even a culture.

©Neanderthal Museum

Frogs freeze their bodies and platypuses detect electric fields: Here are 10 incredible ways animals survive treacherous environments

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A colorful cuttlefish blends in with the surrounding rocks in the water near Thailand
A cuttlefish blending in to its surrounding in the waters surrounding Thailand.

Gerard Soury/Getty

How a safari led me to discover the ancient history of house cats

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Cat in field
A stock image of a cat looking into the distance.

Getty Images

How can you tell if someone isn’t really into doing you a favor?

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Thumbs Up and Thumbs Down
Every two minutes or so, all over the world, someone asks someone else for a small favor. and all over the world, almost everyone says yes. All the time.

Arif Qazi / Insider

How humans behave during natural disasters

Killer whales moms spend more time with their sons than daughters, and it may be threatening their survival

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Two adult killer whales breach the water. One is rubbing against the other.
Two Southern Resident killer whales.

David K. Ellifrit/Center for Whale Research, permit number: NMFS 21238.

A 300 million-year-old fossilized fish has the world's 'oldest preserved vertebrate brain.' It offers new clues about evolutionary history, say scientists.

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The fossilized skull of Coccocephalus wildi, an early ray-finned fish that swam in an estuary 319 million years ago.
The fossilized skull of Coccocephalus wildi, an early ray-finned fish that swam in an estuary 319 million years ago.

Jeremy Marble/University of Michigan News

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