Charles Czeisler

Jan. 16, 2015

Tablets and Smartphones Might Be Sapping Your Sleep

Researchers say using tablets and smartphones before bedtime can shift your circadian rhythms.

charles czeisler, sleep, circadian rhythms, awake, mobile phones, smartphones, blue screen, tablets

Jan. 11, 2013

Simulating the Red Planet, On the Pale Blue Dot

What's it like to live -- and cook -- on Mars? To find out, researchers are simulating Mars missions in Russia and on the slopes of a Hawaiian volcano.

mars mission, space travel, spaceflight, simulation, voyage, mission to mars, sleep, daylight, cycles

Mar. 11, 2011

TV And Smartphones May Hamper A Good Night's Sleep

Nearly half of American adults say they rarely get a good night's sleep, according to a new poll.

sleep, tired, technology, rest

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Michael Pollan Talks Plants and Food

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Comet's Tail Shines Light on Sun

\tIn 2011, comet Lovejoy traveled through the sun’s corona and lived to tell the tale. But its tail was the most telling. Reporting in the journal Science, Cooper Downs, an astrophysicist at Predictive Science Inc. in San Diego, Calif., says that the wiggly path of the comet’s tail helps explain the sun’s magnetic field. \t 

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