Question 1
Question 2
Ask unlimited questions for free
There are more bacteria in your mouth than there are people in the world.
Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).
Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.
Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
The average office desk has 400 times more bacteria on it than a toilet.
For a complete list of videos, visit our video library