Understanding climate tipping points

As the planet warms, many parts of the Earth system are undergoing large-scale changes. Ice sheets are shrinking, sea levels are rising and coral reefs are dying off.

As the Arctic warms, its waters are emitting carbon: Study

When it comes to influencing climate change, the world's smallest ocean punches above its weight. It's been estimated that the cold waters of the Arctic absorb as much as 180 million metric tons of carbon per year—more ...

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