Ask unlimited questions for free
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
Illicit drug use costs the United States approximately $181 billion every year.
Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
Excessive alcohol use costs the country approximately $235 billion every year.
In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).
For a complete list of videos, visit our video library