« previous next »
« previous next »
 

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Bulging Eyes Of The Tarsier Provide Insight Into Evolution Of Human Vision Bulging Eyes Of The Tarsier Provide Insight Into Evolution Of Human Vision
Some clues about the importance of language experience come from the tragic case of Genie, a girl ... Some clues about the importance of language experience come from the tragic case of Genie, a girl ...
A shim (or half shim) may be needed to provide the proper clearance between the flywheel teeth of ... A shim (or half shim) may be needed to provide the proper clearance between the flywheel teeth of ...
Trees provide ecosystem services to people Trees provide ecosystem services to people
Packaged Foods Can Also Provide Carbohydrates Packaged Foods Can Also Provide Carbohydrates
Analyzing Polynomials Analyzing Polynomials
Video: Energy sources - types

For a complete list of videos, visit our video library