« previous next »
« previous next »
 

Did you know?

About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

Did you know?

Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

Did you know?

It is difficult to obtain enough calcium without consuming milk or other dairy foods.

Did you know?

The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

Did you know?

About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

Tree species richness in North America is correlated with evapotranspiration rate. Tree species richness in North America is correlated with evapotranspiration rate.
Sceloporus undulates, the eastern fence lizard, is one of the most widely distributed lizard species Sceloporus undulates, the eastern fence lizard, is one of the most widely distributed lizard species
Species evenness and species diversity. Species evenness and species diversity.
Genetically determined innate immunity due to the species specificity of some infections, due to ... Genetically determined innate immunity due to the species specificity of some infections, due to ...
r, k-selected species r, k-selected species
Phylogenetic relationships among Hawaiian Drosophila species Phylogenetic relationships among Hawaiian Drosophila species
Video: Heart sounds

For a complete list of videos, visit our video library