Ask unlimited questions for free
More than 4.4billion prescriptions were dispensed within the United States in 2016.
In 1864, the first barbiturate (barbituric acid) was synthesized.
There are 20 feet of blood vessels in each square inch of human skin.
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
Illicit drug use costs the United States approximately $181 billion every year.
For a complete list of videos, visit our video library