Marie Curie remains the only person to win Nobel Prizes in two different sciences — physics and chemistry.

In 1932, Australia deployed machine guns against flocks of emus during the Emu War.

Fact #780 · History

In 1966, a U.S. bomber accidentally dropped nuclear weapons over Spain.

Fact #801 · History

In 1809, two countries declared war and then forgot to sign a peace treaty for years.

Fact #805 · History

The first mammals appeared during the age of dinosaurs.

Fact #677 · History

The 2005 Hurricane Katrina caused severe flooding in New Orleans.

Fact #843 · History

Ancient Egyptians built pyramids as monumental tombs for pharaohs.

Fact #18 · History

In 1914, a brief Christmas truce saw soldiers from opposing sides meet peacefully during World War I.

Fact #782 · History

The Manhattan Project changed the course of global history.

Fact #1026 · History