There are about 7,000 languages in the world — one goes extinct roughly every two weeks

Mandarin Chinese is the most spoken first language — about 920 million native speakers

Mandarin Chinese has approximately 920 million native speakers

Basque is a language isolate — unrelated to any other known language on Earth

Basque is a language isolate, not related to any other language family

Sharks are older than trees — sharks appeared about 400 million years ago, trees about 350 million

Sharks existed approximately 400 million years ago, predating trees by 50 million years

Mongolia is the most sparsely populated country — 2 people per square kilometer

Mongolia has a population density of approximately 2 people per square kilometer

The longest word in English without a repeated letter is 'uncopyrightable' — 15 letters

'uncopyrightable' is the longest English word without repeating letters, 15 letters long

A single teaspoon of soil contains more microorganisms than people on Earth

"One teaspoon of soil hosts more microbes than Earth's human population."