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Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

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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.

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Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

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Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

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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.

If their caregivers sign to them, deaf children will imitate these signs and “babble” in sign, ... If their caregivers sign to them, deaf children will imitate these signs and “babble” in sign, ...
Children with autism generally prefer interacting with objects over people. Children with autism generally prefer interacting with objects over people.
One target for expanding medical services involves vaccinations. Only 78 percent of children ages 19 ... One target for expanding medical services involves vaccinations. Only 78 percent of children ages 19 ...
Child influences on parents, parenting influences on children, and influences of the marital ... Child influences on parents, parenting influences on children, and influences of the marital ...
Leading Sites of New Cases of Cancer Worldwide, 2012 Leading Sites of New Cases of Cancer Worldwide, 2012
How to solve a half life problem involving exponential models (Question 2) How to solve a half life problem involving exponential models (Question 2)
Video: Primate Evolutionary Tree Animation

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