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Did you know?
Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
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In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).
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The human body produces and destroys 15 million blood cells every second.
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.
![New Yorkers flee from the dust caused by the collapse of the twin towers of the World Trade Center f](https://biology-forums.com/gallery/47/medium_27_24_08_15_1_42_53_22400208.jpeg)
![A mother dies, a father loses his leg—such calamities shattered poor urban families. Orphaned street](https://biology-forums.com/gallery/47/medium_6_24_08_15_12_36_55_224282222.jpeg)