In a series of experiments, brittle stars learned that "lights out" was a dinner bell call to come for dinner. Credit: Julia Notar In a series of experiments, brittle stars learned that "lights out" ...

The brittle star specimen suggests that the sea creatures have been splitting themselves in two to reproduce for more than 150 million years. By Jack Tamisiea Some brittle stars give an arm and a leg ...

As mist lingers over a Swedish fjord lined with towering, forested cliffs, a group of scientists collect mud from the bottom of the turquoise-colored waters. They’re after brittle stars—marine animals ...

In a series of experiments, brittle stars learned that “lights out” was a dinner bell call to come for dinner. DURHAM, N.C. -- We humans are fixated on big brains as a proxy for smarts. But headless ...