most popular science myths

According to livescience.com:

1. A chicken can live without its head;
2. Water drains backward in the Southern Hemisphere due to the Earth's rotation;
3. There is no gravity in space;
4. Humans use only 10 percent of their brains;
5. Eating a poppy-seed bagel mimics opium use;
6. A penny dropped from the top of a tall building could kill a pedestrian;
7. Adults don't grow new brain cells;
8. Chicken soup can cure the common cold;
9. Yawning is "contagious";
10. A dog's mouth is cleaner than a human's;
11. Lightning never strikes the same place twice;
12. Hair and fingernails continue growing after death;
13. A falling cat will always land on its feet;
14. Men think about sex every seven seconds;
15. You get less wet by running in the rain;
16. The five-second rule;
17. Animals can predict natural disasters;
18. Seasons are caused by the Earth's proximity to the sun;
19. The Great Wall of China is the only man-made structure visible from space; and
20. It takes seven years to digest gum.