Pokémon come in one of 18 types that have strengths and weaknesses to all the others. Here's a handy guide on how types work.

There are eight blood types: A positive, A negative, B positive, B negative, O positive, O negative, AB positive and AB negative. But which is the rarest?

A global study shows the prevalence and mortality of cancer. It also provides estimates on how likely you are to get cancer, which varies by location.