Whitening Strips Alter Proteins in Teeth
Hydrogen peroxide in whitening treatments penetrates enamel and dentin, and alters tooth proteins. Christopher Intagliata reports.-- Read more on ScientificAmerican.com
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Grazing Deer Alter Forest Acoustics
Deer populations have exploded in North American woodlands, changing forest ecology—and how sounds, like birdsong, travel through the trees. Christopher Intagliata reports.-- Read more on ScientificAmerican.com