News
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EarthStunting Growth: Ozone will trim plants’ carbon-storing power
Increasing ground-level ozone due to pollution will stifle the growth of vegetation in many regions, accelerating the buildup of planet-warming carbon dioxide in the atmosphere.
By Sid Perkins -
Health & MedicineGood Light: Sun early in life could protect against MS
Childhood exposure to direct sunshine may protect people against developing multiple sclerosis later.
By Nathan Seppa -
Weighting for Friends: Obesity spreads in social networks
Obesity spreads as a social contagion through networks of friends and relatives, apparently because associating with overweight people encourages a laxer attitude toward weight gain.
By Bruce Bower -
HumansUniversities seek armchair astronomers
Scientists are recruiting online help from the public to classify the shapes of 1 million galaxies in never-before-viewed photographs.