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In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

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Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

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Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

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The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

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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."

The greenhouse effect: heat trapping by earth's atmosphere. The greenhouse effect: heat trapping by earth's atmosphere.
Versatility of carbon bonding Versatility of carbon bonding
A difference in oxygen content between the atmosphere and the exhaust gases enables an O2S to ... A difference in oxygen content between the atmosphere and the exhaust gases enables an O2S to ...
Checking fuel-pump volume using a hose from the outlet of the fuel-pressure regulator into a ... Checking fuel-pump volume using a hose from the outlet of the fuel-pressure regulator into a ...
Carbon Orbitals Carbon Orbitals
Agricultural Land as a Fraction of Total Wealth in the United Kingdom Agricultural Land as a Fraction of Total Wealth in the United Kingdom
Video: Elementary kinetics

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