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Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

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The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.

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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

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Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

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Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Cloning may help save endangered species. Cloning may help save endangered species.
Effects of Elevation on Heart Rate and Ventilation Effects of Elevation on Heart Rate and Ventilation
The Head Start program was designed to increase the school readiness of low-income children. The Head Start program was designed to increase the school readiness of low-income children.
Mean Monthly Temperatures for Two Locations in Canada Mean Monthly Temperatures for Two Locations in Canada
Siri plans to retire in 18 years and would like to receive $10 000.00 per month for twenty ... Siri plans to retire in 18 years and would like to receive $10 000.00 per month for twenty ...
The price of rice in a small country is currently $6 per pound. In order to help low-income ... The price of rice in a small country is currently $6 per pound. In order to help low-income ...
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