18. Chameleons don’t change colour as a disguise to match their environment. They change colour to communicate with other chameleons.

19. Schizophrenia has nothing to do with having multiple personalities. Dissociative identity disorder, the widely accepted current term for “multiple personality disorder”, is a completely different, unrelated (and historically controversial) illness.

20. Whether you’re more emotional and creative or logical and analytical has nothing to do with being “left brained” or “right brained”.

21. You don’t lose most of your body heat through your head. Your head loses heat at the same rate (per square inch of skin) as any other part of your body.

22. If you cut an earthworm in half, it’s not true that both halves regrow their body, resulting in two complete worms. Only the head stands a chance of surviving. (But there are species of flatworms that can regenerate from any body part.)