Ask unlimited questions for free
The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
There are more bacteria in your mouth than there are people in the world.
Thyroid conditions may make getting pregnant impossible.
Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
For a complete list of videos, visit our video library