Myth in our life (I)

Humans use only 10 percent of their brains
This media darling has been around for at least a century. Fortunately, it's just not true. MRI imaging clearly demonstrates—with fancy colors no less—that humans put most of their cerebral cortex to good use, even while dozing.

A dog's mouth is cleaner than a human's
Despite a habit of licking things no human would dare, Fido's mouth is often touted as scientifically more sterile. Truth is, oral bacteria are so species-specific that one can't be considered cleaner than the other, just different.

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.

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 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.

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.

source : http://www.livescience.com/