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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

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It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

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Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.

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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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A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

Some of the bacteria that can fix atmospheric nitrogen, converting it into a form usable by plants. Some of the bacteria that can fix atmospheric nitrogen, converting it into a form usable by plants.
Variations on a theme: archaic Homo sapiens, Neandertal, and anatomically modern Homo sapiens skulls Variations on a theme: archaic Homo sapiens, Neandertal, and anatomically modern Homo sapiens skulls
Color mixtures of refracted light—additive process. Color mixtures of refracted light—additive process.
A color-enhanced MRI image of the skull. A color-enhanced MRI image of the skull.
Jostling. A form of coarse vibration that includes mobilizing joints. Jostling. A form of coarse vibration that includes mobilizing joints.
Use flat fingers to apply L stroke in several locations to cover the entire forehead, from midline ... Use flat fingers to apply L stroke in several locations to cover the entire forehead, from midline ...
Video: Structures that affect circulation - arterioles and vasomotor responses and venous return

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