Share the knowledge!
Key Facts In This Video
There are around 10 billion bats on Earth, and they account for approximately one fifth of all mammals. 00:43
Earth's 7 billion humans weigh around 287 million tons, but we're outweighed by just one species of krill. 02:04
There are around 3 septillion bacteria in all the cow stomachs on Earth. 03:09
Wake up with the smartest email in your inbox.
Our best articles a few times a week.