« previous next »
« previous next »
 

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Did you know?

Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

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?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

Children may sometimes sort their toys into different categories. Children may sometimes sort their toys into different categories.
Young children’s play engages motor skills as well as cognitive skills (such as communicating, ... Young children’s play engages motor skills as well as cognitive skills (such as communicating, ...
The Head Start program was designed to increase the school readiness of low-income children. The Head Start program was designed to increase the school readiness of low-income children.
Anglin's estimates of the total vocabulary of children in Grades 1, 3, and 5 Anglin's estimates of the total vocabulary of children in Grades 1, 3, and 5
Children and adolescents define themselves as they get older Children and adolescents define themselves as they get older
Bateson and Punnett’s Observed and Expected Phenotypes in F2 Sweet Peas Bateson and Punnett’s Observed and Expected Phenotypes in F2 Sweet Peas
Video: Properties of water -structure of water and polarity (Ionized and polar compounds)

For a complete list of videos, visit our video library