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Did you know?

Illicit drug use costs the United States approximately $181 billion every year.

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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

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Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

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Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Total fertility rates (TFRs) among major regions of the world. Total fertility rates (TFRs) among major regions of the world.
Major steps in the coagulation cascade Major steps in the coagulation cascade
“Mission Accomplished” proclaimed the banner on the USS Abraham Lincoln, where on May 1, 2003, Presi “Mission Accomplished” proclaimed the banner on the USS Abraham Lincoln, where on May 1, 2003, Presi
Essential Fatty Acids Both linoleic acid (an omega-6 fatty acid) and alpha-linolenic acid Essential Fatty Acids Both linoleic acid (an omega-6 fatty acid) and alpha-linolenic acid
The pH scale: Acids, Bases, and Buffers and Body Fluids in Flux The pH scale: Acids, Bases, and Buffers and Body Fluids in Flux
The plasma membrane The plasma membrane
Video: Chemical Messengers Animation

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