Iceland is home to more than 100 volcanoes and experiences an earthquake almost every day.

The tallest waterfall in the world is Angel Falls in Venezuela.

Australia is wider than the Moon — the continent spans about 4,000 km coast to coast.

The Great Lakes contain about 20% of the world's surface freshwater.

The Colosseum in Rome demonstrates advanced ancient engineering.

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

Fossils have been found on every continent, including Antarctica.

The Great Wall of China is not visible from space with the naked eye — it's too narrow relative to its length.

The CN Tower in Toronto was once the tallest free-standing structure.