« previous next »
« previous next »
 

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Did you know?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Aristolochic acid (AA), a component of birthwort,a plant used in herbal remedies since ancient times Aristolochic acid (AA), a component of birthwort,a plant used in herbal remedies since ancient times
Tuberculosis. Microphotograph of the Mycobacterium tuberculosis, the cause of the disease TB. Tuberculosis. Microphotograph of the Mycobacterium tuberculosis, the cause of the disease TB.
Einstein - Science is the work of... Einstein - Science is the work of...
Maps are important tools in political science as they help us see relationships between politics and Maps are important tools in political science as they help us see relationships between politics and
Edward Bellamy, author of the utopian novel Looking Backward (1888) Bellamy’s socialism worried many Edward Bellamy, author of the utopian novel Looking Backward (1888) Bellamy’s socialism worried many
Conceptual Physical Science Conceptual Physical Science
Video: Bone tissue types - compact and spongy

For a complete list of videos, visit our video library