Ask unlimited questions for free
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
There are more bacteria in your mouth than there are people in the world.
The horizontal fraction bar was introduced by the Arabs.
Women are 50% to 75% more likely than men to experience an adverse drug reaction.
For a complete list of videos, visit our video library