« previous next »
« previous next »
 

Did you know?

Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

Did you know?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

Did you know?

There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

Ammonium as an energy source for chemoautotrophic bacteria in soil. Ammonium as an energy source for chemoautotrophic bacteria in soil.
Pasteur separated crystals Pasteur separated crystals
Electromagnetic Radiation Chart Electromagnetic Radiation Chart
Effect of the activation energy barrier. Effect of the activation energy barrier.
What Happens to Incoming Solar Radiation? What Happens to Incoming Solar Radiation?
Energy requirements of an uncatalyzed versus an enzymatically catalyzed chemical reaction Energy requirements of an uncatalyzed versus an enzymatically catalyzed chemical reaction
Video: Introduction to Macular Degeneration

For a complete list of videos, visit our video library