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- 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
- Major twister hits Oklahoma: Its speed, which largely determines the damage it causes, is still unknown
Duck-billed dinosaurs relied on hundreds of interlocking teeth that formed a rough chewing surface (Edmontosaurus teeth, shown) to mash tough, abrasive foods. Six different types of tissue formed the dinos’ complex teeth, new research shows.
Credit: G.M. Erickson et al/Science 2012
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