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Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

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Human kidneys will clean about 1 million gallons of blood in an average lifetime.

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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

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During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

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Your heart beats over 36 million times a year.

Four approaches to studying the evolution of human behavior. Four approaches to studying the evolution of human behavior.
Scent-Tracking Behavior Scent-Tracking Behavior
Male Sexual Behavior Male Sexual Behavior
This map shows the percentage of Protestants by state in Germany. When compared to the previous map This map shows the percentage of Protestants by state in Germany. When compared to the previous map
The relative influence of heredity and the environment in human behavior has fascinated and plagued ... The relative influence of heredity and the environment in human behavior has fascinated and plagued ...
Models for Genetic Analysis of Behavior Models for Genetic Analysis of Behavior
Video: Photosynthesis and Van Helmont Experiment

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