The examined life, advocated by Socrates, suggests that self-knowledge is the foundation of wisdom.

Certain owls hunt silently because of specialized feather structures.

Fact #542 · Animals

Clownfish can change sex during their lifetime.

Fact #361 · Animals

Elephants communicate using low-frequency sounds.

Fact #51 · Animals

Many species of beetles have hardened wing covers called elytra.

Fact #457 · Animals

A kingfisher dives into water to catch fish.

Fact #573 · Animals

Some species of frogs can survive being partially dehydrated.

Fact #444 · Animals

Some birds use tools to extract insects from wood.

Fact #416 · Animals

A camel's hump stores fat, not water.

Fact #419 · Animals