Related topics: sleep

Storm Fiona slams into east Canada, major power outages

Powerful storm Fiona knocked out electricity to more than 500,000 homes Saturday as it lashed east Canada with strong winds and heavy rains in conditions that police said were "like nothing we've ever seen."

Strong 6.1 magnitude earthquake hits Panama: USGS

A 6.1 magnitude earthquake hit Panama on Sunday near the border with Costa Rica, the US Geological Survey said, but there were no immediate reports of damage or casualties.

Using smartphone cameras to track alertness

Our level of alertness rises and falls over the course of a workday, sometimes causing our energy to drop and our minds to wander just as we need to perform important tasks.

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Alertness

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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