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TechMeddling with Metal: Novel nanocontrol yields chromium rival
A new, nontoxic alloy that might reduce use of toxic chromium springs from a novel way to manipulate crystalline metal structures via precise control of their atomic composition.
By Peter Weiss -
AnthropologyPolynesian Latecomers: Easter Islanders took fast track to culture
New radiocarbon dates from Easter Island indicate that the isolated Polynesian island was first colonized around A.D. 1200, up to 800 years later than had previously been thought.
By Bruce Bower -
Health & MedicineGot Data? Consuming calcium, dairy doesn’t keep off weight
Dairy products and other calcium-containing foods don't prevent weight gain, according to a 12-year study of middle-aged men.