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Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.
The average office desk has 400 times more bacteria on it than a toilet.
There are more nerve cells in one human brain than there are stars in the Milky Way.
Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.
GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.
![This Native American depiction of the Sand Creek Massacre, painted on a buffalo hide, shows the Indi](https://biology-forums.com/gallery/47/medium_376063_22_08_15_11_31_02_223732178.jpeg)
![The explosion of the Maine in Havana harbor, killing 260 men, caused much speculation in the newspap](https://biology-forums.com/gallery/47/medium_6_02_03_16_7_45_21_234021930.jpeg)