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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 PLASTIC DEGRADATION
ENLARGE | At left, wax used as a molding release has migrated past the polyvinyl chloride skin of this 1960s doll, leaving a blotchy white coating. The series of images at right shows the stages of degradation of Antoine Pevsner’s 1923 “Head of a Woman,” made of nitrocellulose plastic.
Credit: Courtesy of the hirshhorn museum; John lee/National Museum of Denmark, which is part of POPART
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