Salt Lake City Newswire
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Dinosaurs evolved from their smaller ancestors in just a few million years and not the 10 million years or more scientists had suspected, according to a new study. The work, based on radioactive dating of rocks sandwiching the earliest fossils of those predecessors, suggests that paleontologists have long misjudged the overall pace of dinosaur evolution. Comment?
Why elephants aren't riddled with tumors poses a weighty problem for researchers. A new study shows that the animals harbor dozens of extra copies of one of the most powerful cancer-preventing genes. Comment?
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