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Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.
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.
The average adult has about 21 square feet of skin.
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.
![The cranium of a young infant changes dramatically in shape with age. Initially the child has severa](https://biology-forums.com/gallery/47/medium_273688_23_02_15_8_21_31_209031597.jpeg)
![In 1879 an army officer founded the Carlisle School in Pennsylvania to “civilize” young Indians. The](https://biology-forums.com/gallery/47/medium_376063_22_08_15_11_31_03_223782117.jpeg)