Nature Live Online: Back to the Future

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Carbon dioxide in the Earth's atmosphere is rising at an alarming rate.

The last time levels were this high was in the Pliocene epoch over 3 million years ago. What can studying fossilised marine organisms tell us about the conditions for life at that time? Join Alison Shean and palaeontologist Richard Twitchett to discover how exploring climates in the past can be an important guide to our present and possible future world.

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