The Sargasso Sea in the North Atlantic is the only sea without a land boundary, defined entirely by ocean currents.

The 2019–2020 Australian bushfires burned millions of acres.

The Aztecs built the city of Tenochtitlan on a lake.

The Sahara Desert was once home to large lakes and grasslands.

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

The Amazon rainforest influences global rainfall patterns.

There are deep ocean trenches deeper than Mount Everest is tall.

Lake Baikal in Russia holds about 20% of the world's unfrozen fresh surface water.

The Aztec capital Tenochtitlan had a population of around 200,000 in the early 16th century, larger than most European cities.