Ask unlimited questions for free
Illicit drug use costs the United States approximately $181 billion every year.
There are 60,000 miles of blood vessels in every adult human.
Green tea is able to stop the scent of garlic or onion from causing bad breath.
Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
The average office desk has 400 times more bacteria on it than a toilet.
For a complete list of videos, visit our video library