You are growing a bacteria colony. The bacteria divide itself themselves into two after exactly one minute. You start with one bacteria at 10 AM, at 11 AM your Petri dish is half full. When will your Petri dish fill up?
In 2012 scientists collected swabs from 60 different belly buttons and grew the bacteria in petri dishes. They found 2,368 different bacterial species. What’s even more astonishing: 1,458 of them might be completely knew to science. By the way, you should take more care of your office desk. On average, it contains 400 times more bacteria than a toilet!