The brain uses about 20% of the body's total energy despite being only 2% of body weight.

Sea turtles have existed for over 100 million years.

Fact #1286 · Human Body

Many insects have exoskeletons that protect them from dehydration.

Fact #876 · Human Body

The Olympic Games are held every four years.

Fact #923 · Human Body

Curiosity can enhance learning and memory retention.

Fact #973 · Human Body

The Megalodon lived millions of years before humans appeared.

Fact #704 · Human Body

Some animals sleep for years.

Fact #1720 · Human Body

The Earth's mantle lies between the crust and core.

Fact #301 · Human Body

The human brain continues to develop into early adulthood.

Fact #83 · Human Body