Humans have natural cycles for when they are active and for when they sleep. Modern work and school schedules interfere with this, and more studies are showing why there's a possible health risk.
Unfortunately, there’s not an unlimited amount of daylight that we can squeeze out of our clocks.
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Advocates say daylight saving time saves energy and wins wars. But studies show that injuries and illnesses rise when the clocks change. Some states may end the practice; others could make it permanent.
There may be a very good reason for not wanting to get up in the morning when it’s still dark.
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Evidence for a link between breast cancer and artificial light appears to be growing. Do studies showing higher risk of breast cancer the farther west a woman lives in a time zone add to the science?