Our planet counts: climate change explained

The 10 years to the end of 2019 have been confirmed as the hottest decade by three global agencies.

This year's climate change was associated with Australian forest fires, heavy rains in Indonesia and record temperatures in Europe. But what is climate change?

Rebecca Morelle, BBC Global Science correspondent, explains.

This video is part of Our Planet Matters, a special one-year series dealing with climate change.

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