« previous next »
« previous next »
 

Did you know?

Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

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?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Did you know?

Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.

Did you know?

To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

The shoot apical meristem and stem cells. The shoot apical meristem and stem cells.
Presynaptic and postsynaptic cells. Presynaptic and postsynaptic cells.
The mammalian heart and the route blood takes through it. The mammalian heart and the route blood takes through it.
Embryonic Stem Cells Embryonic Stem Cells
Jupiter and Its Largest Moons Jupiter and Its Largest Moons
Spermatogenesis and oogenesis in animal cells Spermatogenesis and oogenesis in animal cells
Video: Carbon fixing adaptations Animation

For a complete list of videos, visit our video library