Ask unlimited questions for free
The longest a person has survived after a heart transplant is 24 years.
Green tea is able to stop the scent of garlic or onion from causing bad breath.
Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
For a complete list of videos, visit our video library