News
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LifeGreat-grandpa’s genes gone, effects stay
Removing an obesity-preventing scrap of DNA from a mouse lineage doesn’t prevent descendants from reaping its slimming benefits for generations.
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HumansJust breathing in Iraq can be hazardous
Poor air quality is an added danger for troops, testing indicates.
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Health & MedicineNew drug boosts hepatitis C treatments
An experimental medication has cleared a major hurdle and seems poised for FDA approval, two studies show.
By Nathan Seppa -
SpaceFirst portraits of Mercury from orbit
MESSENGER spacecraft to capture more than 1,500 images in three days.
By Ron Cowen -