Duelling is legal in Paraguay as long as both parties are registered blood donors. See more

Lobsters have pale blue blood. See more

If you are locked in a completely sealed room, you will die of carbon dioxide poisoning before you will die of oxygen deprivation. See more

You are 3 times more likely to be killed by a flying champagne cork than you are to be killed by the bite of a venomous spider. See more

The original name for the butterfly was flutterby! See more

Goldfish have the memory span of about 3-5 seconds. See more

Butterflies taste with their feet. See more

Bees can see ultraviolet light. See more

Apples, not caffeine, are more efficient at waking you up in the morning. See more