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EarthAntarctic sediments muddy climate debate
Ocean-floor sediments drilled from Antarctic regions recently covered by ice shelves suggest that those shelves were much younger than scientists had previously thought.
By Sid Perkins -
Glutamate paths surface in schizophrenia
Three new studies indicate that altered transmission of glutamate, a key brain chemical, plays an influential role in the severe mental disorder known as schizophrenia.
By Bruce Bower -
AnimalsEven deep down, the right whales don’t sink
A right whale may weigh some 70 tons, but unlike other marine mammals studied so far, it tends to float rather than sink at great depths.
By Susan Milius -
Health & MedicineArteries may be vulnerable to HIV attack
HIV may directly interact with cells in arteries, predisposing people to heart attacks.