« previous next »
« previous next »
 

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

Did you know?

The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

Did you know?

Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

The tundra at the base of the Torngat mountains in Labrador consists primarily of low-growing mosses The tundra at the base of the Torngat mountains in Labrador consists primarily of low-growing mosses
The violation of mores is a serious matter. In this case, it is serious enough that security at an ... The violation of mores is a serious matter. In this case, it is serious enough that security at an ...
Social Security Payments to Beneficiaries Social Security Payments to Beneficiaries
The neural pathway responsible for the production and learning of song in the male canary. The neural pathway responsible for the production and learning of song in the male canary.
Frederick Griffith’s experiment identifying a ″transformation factor″ responsible for heredity Frederick Griffith’s experiment identifying a ″transformation factor″ responsible for heredity
Energy homeostasis is regulated primarily by the brain, gastrointestinal tract, other organ systems, Energy homeostasis is regulated primarily by the brain, gastrointestinal tract, other organ systems,
Video: Autonomic Nervous System Animation

For a complete list of videos, visit our video library