Chickens can live without a head
True, and not just for a few minutes. A chicken can stagger around without its noggin because the brain stem, often left partially intact after a beheading, controls most of its reflexes. One robust fellow lived a full eighteen months. Likely he was a real birdbrain, however.
Hair and fingernails continue growing after death
Though hair and fingernails appear to keep growing after death, this is merely a morbid optical illusion at work. In death the human body dehydrates severely, retracting enough skin to expose more nail and hair.
A falling cat will always land on its feet
Studies have demonstrated that, when dropped from most heights, cats will land gracefully on their feet. Results change only with cats dropped upside-down from a height of one foot or less. We're not suggesting you try this at home.
You get less wet by running in the rain
Actual mathematical equations devoted to this popular question have suggested it is true, though not for the simple reasons you might think. Complexities include factoring in the number of rain drops hitting the walker's head versus smacking the runner's chest.
The five second rule
Having an arbitrary rule justifying the consumption of food dropped on the floor within a certain time frame is convenient, especially when said food is a brownie. Unfortunately, tests (and logic) confirm that germs will stick to most foods right on contact.
Chicken soup can cure the common cold
Cure is a strong word, but science suggests Moms around the world are still right in forcing spoonfuls of chicken soup down their kids' throats. Studies have found that the broth actually contains anti-inflammatory properties that help reduce congestion.
The Great Wall of China is the only manmade structure visible from space
There are several variations on this folkloric statement, and they're all quantifiably false. Astronauts can spot the Great Wall from low-Earth orbit, along with plenty of other things like the Giza pyramids and even airport runways. But they can't see the Wall from the Moon.
Yawning is "contagious"
Empirically, this is tough to deny; perhaps you'll yawn while reading this. The real question is whether there's actually something physiological at work here, and the answer is likely yes: even chimpanzees mimic each other's yawns.
Lightning never strikes the same place twice
In fact lightning favors certain spots, particularly high locations. The Empire State Building is struck about 25 times every year. Ben Franklin grasped the concept long ago and mounted a metal rod atop the roof of his home, then ran a wire to the ground, thereby inventing the lightning rod.
