News
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TechCorny collagen
Corn engineered to produce collagen may someday replace slaughterhouse leftovers as a source of gelatin.
By Brian Vastag -
EarthArctic snow was dirtier in early 1900s
Arctic snow collects less soot now than it did a century ago, but it's still dirtier than it was before the Industrial Revolution.
By Sid Perkins -
AnimalsBats hum for sugar too
Some nectar-feeding bats metabolize sugars as rapidly as hummingbirds do.
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Believers gain no health advantage
Strong religious beliefs or practices don't appear to benefit depressed or socially isolated heart attack survivors.
By Bruce Bower -
Health & MedicineWhen antioxidants go bad
Overproduction of antioxidants, usually thought to be beneficial, is the cause of an inherited heart disease.