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- We Still Don't Know What Killed the Biggest Shark of All Time - Paleontologists drew from the Paleobiology Database to analyze occurrences of O. megalodon over time in relation to climate. Contrary to what had previously been thought, temperature probably didn’t freeze the shark into extinction. https://blogs.scientificamerican.com/laelaps/we-still-dont-know-what-killed-the-biggest-shark-of-all-time/ 217 comments science