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The United Nations Secretary-General Antonio Guterres has said the world is waking up to the threat of climate change. Closing a special UN climate summit, he thanked young people for leading the charge.

We hear from Jessie and Issac, two Malawian school children who are in London to give their British counterparts a powerful message about climate change.

The Brazilian President, Jair Bolsonaro is speaking at the UN general assembly on Tuesday where he's expected to try to repair some of the damage done to Brazil’s reputation over his handling of the wildfires in the amazon.