Smoking rates have declined dramatically in wealthy nations but are rising in low-income countries.

The Amazon River discharges more fresh water into the ocean than the next seven largest rivers combined.

Fact #3592 · Geography

The Amazon rainforest produces about 20% of the world's oxygen.

Fact #3746 · Geography

In 1812, an earthquake along the Mississippi River temporarily reversed the river's flow.

Fact #796 · Geography

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

Fact #780 · Geography

Polar vortex events bring extremely cold air to lower latitudes.

Fact #840 · Geography

The Earth's continents were once joined in a supercontinent called Pangaea.

Fact #229 · Geography

The Irish Potato Famine caused Ireland's population to drop by 25% in just a decade through death and emigration.

Fact #3980 · Geography

In 1896, two countries fought a war that lasted under 45 minutes.

Fact #770 · Geography