UK Prime Minister Boris Johnson will tell a US-led climate summit later that leaders need to act to avoid being remembered as the 'generation that sold out the planet'.
40 leaders will attend a virtual White House summit at which President Biden's expected to reveal an updated US carbon pledge.
The UK's boosted its target to what it says is the most ambitious in the world - cutting emissions 78% on 1990 levels by 2035.
Business Secretary Kwasi Kwarteng says it shows what can be achieved if countries work together.
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