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Did you know?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

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Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

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Green tea is able to stop the scent of garlic or onion from causing bad breath.

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Medication errors are more common among seriously ill patients than with those with minor conditions.

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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Animals and plants of the intertidal zone adhering to their rocky surface. Animals and plants of the intertidal zone adhering to their rocky surface.
Distributions of two barnacle species within the intertidal zone Distributions of two barnacle species within the intertidal zone
Environmental factors restricting the distribution of Chthamalus to the upper intertidal zone. Environmental factors restricting the distribution of Chthamalus to the upper intertidal zone.
Intertidal zone / Lithoral zone Intertidal zone / Lithoral zone
Dissolved oxygen at The Gulf of Mexico’s “Dead Zone” Dissolved oxygen at The Gulf of Mexico’s “Dead Zone”
Intertropical convergence zone Intertropical convergence zone
Video: Asthma Treatment

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