We often believe that intelligence begins and ends with the brain. For humans, thinking, remembering, reacting, and learning are all connected to that complex organ inside our heads. But the ocean ...

The ocean is still one of the biggest mysteries on Earth, and the deeper you go, the stranger it gets. Far below the surface, where sunlight can’t reach, lives a world full of creatures that look more ...

Thousands of meters below the ocean's surface lurk some gigantic creatures, much larger than their shallow-water brethren. Scientists have a few hunches for why this happens, but the debate continues.