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Light at Night Can Cause Cancer

Researchers confirm link between "light at night" pollution and elevated rates of breast cancer. Best bet, they say: learn to sleep in the dark.Chana Ya'ar, 1/19/2011, 1:11 PM

Sleep Changes Signal Teen Years

A new study by a Tel Aviv University researcher finds that when children begin to change their sleep patterns, adolescence may not be far behind.Hana Levi Julian, 12/24/2009, 12:35 PM