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- Sweet Confusion: Does high fructose corn syrup deserve such a bad rap?
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- Better chow yields more milk: A more nutritious form of corn for dairy cows boosts farm profits, teen investigator finds
- Fuzzy future: Kids may suffer impaired vision from spending too little time outdoors, studies suggest
- Building with moon rocks: Working on the moon with lunar soil and grit could prove easier, more efficient and less costly than using earthly materials
WAVES OF MIGRATION
View larger image | Human ancestors left Africa in a series of pulses beginning nearly 2 million years ago, according to prevailing models. But where they went and when remains unclear. New genetic data may clarify — or further confuse — the picture.
Credit: GEOATLAS/GRAPHI-OGRE, Adapted by T. Dubé
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