« previous next »
« previous next »
 

Did you know?

There are more sensory neurons in the tongue than in any other part of the body.

Did you know?

All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

How a photosystem harvests light. How a photosystem harvests light.
Light penetration in Rivers Light penetration in Rivers
The biochemical reactions of near-infrared light The biochemical reactions of near-infrared light
The biochemical reactions of near-infrared light The biochemical reactions of near-infrared light
A light shield over an optical sensor being installed before the rotor is attached. A light shield over an optical sensor being installed before the rotor is attached.
Light Brown Eye Color Light Brown Eye Color
Video: A timeline of the teeth (Explained - No Audio)

For a complete list of videos, visit our video library