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Did you know?

More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.

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There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

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Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

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More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

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Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

A Cross Section of the Spinal Cord A Cross Section of the Spinal Cord
Control of Secretion of Stress Hormones Control of Secretion of Stress Hormones
EGT 1 and EGT 2 are used by the PCM to help control after treatment. EGT 1 and EGT 2 are used by the PCM to help control after treatment.
With a three-way catalytic converter, emission control is most efficient with an air–fuel ratio ... With a three-way catalytic converter, emission control is most efficient with an air–fuel ratio ...
Control you knife with one hand and hold the item being cut with the other (1 of 3) Control you knife with one hand and hold the item being cut with the other (1 of 3)
Yearly growth of tree trunk (cross-section) Yearly growth of tree trunk (cross-section)
Video: Type of Transport - Active and Passive Processes

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