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Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

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As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

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Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

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The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Water's Covalent Bonds Are Polar Water's Covalent Bonds Are Polar
The iron atom of heme has six coordination bonds: four in the plane The iron atom of heme has six coordination bonds: four in the plane
Four types of covalent modifications that controls that activities of enzymes Four types of covalent modifications that controls that activities of enzymes
Chemical bonds join atoms into molecules Chemical bonds join atoms into molecules
Polar Bear (Ursus maritimus) mother with cub in snow. Churchill, Canada. Polar Bear (Ursus maritimus) mother with cub in snow. Churchill, Canada.
Video: Diversity of Living Creatures - Charles Darwin & the Beagle's Voyage

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