Princeton geoscientists find new fallout from 'the collision that changed the world.'A research team has created an unprecedented record of ocean nitrogen and oxygen levels from 70 million years ago through 30 million years ago that shows huge shifts in ocean chemistry after the India-Asia Collision

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Princeton geoscientists find new fallout from 'the collision that changed the world.'A research team has created an unprecedented record of ocean nitrogen and oxygen levels from 70 million years ago through 30 million years ago that shows huge shifts in ocean chemistry after the India-Asia Collision