Survival depends heavily on immediate medical care.

In 1978, thousands of people gathered to watch a man attempt to fly using homemade wings.

Fact #779 · General

The Inca built extensive road networks across the Andes.

Fact #585 · General

Zhangye once stood along the Silk Road as a trade hub.

Fact #1670 · General

Nothing can travel faster than light in a vacuum.

Fact #1732 · General

Memories are reconstructed each time you recall them.

Fact #1967 · General

There are more possible human faces than people who have ever lived.

Fact #2247 · General

X-rays were discovered in 1895 and transformed medical imaging.

Fact #1194 · General

The spotlight effect causes people to overestimate how much others notice them.

Fact #1486 · General