The Sahara Desert receives less rainfall than most regions.

Iceland sits directly on the Mid-Atlantic Ridge and is actually spreading by 2.5 cm per year as two tectonic plates diverge.

The largest desert in the world by area is Antarctica.

Sudan has more ancient pyramids than Egypt — over 200, though smaller in scale.

The world's deepest lake is Lake Baikal in Russia, containing 20% of the world's unfrozen fresh water.

The Nile is generally considered the world's longest river, but some measurements put the Amazon ahead depending on source point.

Akrotiri was preserved under volcanic ash on Santorini.

The Golden Gate Bridge was completed in 1937.

The Nile Delta is one of the world's largest river deltas.