World Records Quiz

From the tallest building to the fastest animal, Earth holds records that are as surprising as they are impressive. This quiz tests how well you know the superlatives that define our planet — natural and human-made alike.

Ten questions cover a broad range: the world's most spoken language, the longest river, the deepest ocean trench, the fastest land animal, and other extremes from geography, nature, and human achievement.

Think you know your world records? Some of the answers are exactly what you'd expect — and a few will catch you off guard.