Alertness

A slow burning natural disaster

Sometime in the next several days, monsoon rains will begin to sweep across India and gradually move northward, offering drenching relief to thousands caught in this year's relentless heat wave. Andhra Pradesh, one of the ...

Jun 04, 2015
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The coming merge of human and machine intelligence

For most of the past two million years, the human brain has been growing steadily. But something has recently changed. In a surprising reversal, human brains have actually been shrinking for the last 20,000 years or so. We ...

May 25, 2015
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Alertness is the state of paying close and continuous attention, being watchful and prompt to meet danger or emergency, or being quick to perceive and act. It is related to psychology as well as to physiology. A lack of alertness is a symptom of a number of conditions, including narcolepsy, attention deficit disorder, chronic fatigue syndrome, depression, Addison's disease, or sleep deprivation. The word is formed from "alert", which comes from the Italian "all'erta" (on the watch, literally, on the height; 1618)

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