Some scientists suspected that our ear wax may contain a natural fungicide, bactericide, and insecticide, the better to protect against buggy invaders crawling inside the ear canal. Alas, this turns out not to be true.
What it is, why it's there, and why q-tips are a bad idea.
Whales can live longer than humans do, but often there is only one way for researchers to find out the age of a particular whale. They have to go deep inside the whales' ears.