When you dream, your body is paralyzed.
In the first 90 minutes of sleep, you go through deepening stages ranging from light sleep to deep sleep.
Then you enter a phase called REM sleep (REM is short for Rapid Eye Movement) During REM sleep, the rest of your body essentially becomes paralyzed. The release of certain neurotransmitters are shut down and your large muscles do not move.
Some people have abnormal REM sleep in which those neurotransmitters do not shut down, and they act out their dreams. Most of the dreams we vividly remember happen during REM, as our brain has higher activity during this phase.
Dr. Frederic Leroy of L'Oréal research thinks really highly of hair. In his research he has found that a single strand of hair can hold about 100g (3oz) of weight. However, most people grow about 150,000 strands on their head. 
In Iran, more than 70% of alumni in engineering and pure sciences are women. The country’s literacy rate is at 80% well above the 60% average for the region.
You might imagine the inventor being someone from the Army or a policeman, but the true creator was a pizza delivery man! On July 21st, 1969, Richard Davis was delivering pizzas in Detroit when he was held up at gunpoint!
It's a set of volcanic islands called Izu Islands, off of Japan that have so much sulfur that it’s resident’s must wear gas masks outside. In early 2000 the islands were evacuated, due to a volcano emiting dangerous gasses. In 2005, people were allowed to go back, but they were required to keep a gas mask with them at all times.
