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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
EARLY TOOLS
EARLIER EVIDENCE. These stone tools likely belonged to Peking Man, a set of Homo erectus fossils found in northeastern China that are now reported to date to 780,000 years ago.
Credit: Ciochon/U. of Iowa
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