• There used to be a 13th constellation in the Zodiac - Opheicus.But since 13 is unlucky, astrologers just ignored it.
• When you sleep, you grow by about 8mm (0.3in). The next day you shrink back to your former height. The reason is that your cartilage discs are squeezed like sponges by the force of gravity when you stand or sit.
• Did you know fishes talk to each other? Some of them communicate by making noises in their throats by rasping their teeth, others use their swim bladders to make sounds.
• Every time you lick a stamp, you’re consuming 1/10 of a calorie!
• King Louis XIV was so afraid of weapons that he ruled all pointed knives at dinner tables illegal.