« previous next »
« previous next »
 

Did you know?

Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

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?

Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

Did you know?

The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

Did you know?

Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

Countercurrent heat exchange in dolphin flippers promotes conservation of body heat. Countercurrent heat exchange in dolphin flippers promotes conservation of body heat.
Organisms exhibit a diversity of behaviours, which include (clockwise from upper left), foraging and Organisms exhibit a diversity of behaviours, which include (clockwise from upper left), foraging and
During confrontations with others, the mane makes the lion look larger. During confrontations with others, the mane makes the lion look larger.
A melanistic jaguar is a colour morph which occurs at about 6% frequency in populations. A melanistic jaguar is a colour morph which occurs at about 6% frequency in populations.
Lung Fissures, Anterior View Lung Fissures, Anterior View
Atelectasis (collapsed lung). Atelectasis (collapsed lung).
Video: The Lagging Strand in DNA Replication and Replication in Action

For a complete list of videos, visit our video library