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Clam Cancer Spreading; Ocean Acidification Triggered Worst Mass Extinction on Earth
Friday, April 10, 2015 23:11
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Unusual cancer spreads among clams off North America. Contagious cancer among edible clams off the northeast U.S. and Canadian coasts has raised new questions about marine health.
Ocean acidification triggered devastating extinction. Ocean acidification triggered by massive volcanic eruptions helped cause the worst mass extinction in the history of life on Earth.
