Shark teeth offer new look at Arctic climate change
Chicago IL (SPX) Jul 11, 2014 - A new study shows that some shark species may be able to cope with the decreasing salinity of Arctic waters that may come with rising temperatures. The Arctic today is best known for its tundra and polar bear population, but it wasn't always like that. Roughly 53 to 38 million years ago during what is known as the Eocene epoch, the Arctic was more similar to a huge temperate forest with br ... more
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