Our World in Data mapped out the UN's predictions for the size of the world population. The rate of change is pretty astounding -- with some interesting twists when we look closer.
Tag: exponents
History of Calculating π: Number of Accurate Digits
It's almost π day (3/14 in the US)! Some people like to try to memorize π. Is it possible for them to memorize all the known digits? How many digits ARE known, and how has our knowledge of π changed over time?