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AstronomyOld stars reveal universe’s minimum age
Using a technique more precise than ever before, an international team of researchers has estimated the age of the universe to be at least 12.5 billion years old.
By Linda Wang -
AnthropologyNeandertals and humans each get a grip
A fossil analysis indicates that, by about 100,000 years ago, modern humans in the Middle East had hands suited to holding stone tools by attached handles, whereas Neandertals did not.
By Bruce Bower -
Health & MedicineOne-Two Drug Punch Trips Up Leukemia
A leukemia cell seals its own fate when researchers trap cancer-causing proteins in its nucleus.
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MathWhite Narcissus
The elegant, swooping forms carved out of wood by sculptor Robert Longhurst often resemble gracefully curved soap films that span twisted loops of wire dipped into soapy water.