Factbox: United States, other countries, ramp up climate-change ambition

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April 22 (Reuters) - The United States said it aims to halve its greenhouse gas emissions by 2030 in a bid to fight climate change. The new target was announced at the start of a two-day international climate summit hosted by President Joe Biden, which is intended to showcase rising global ambition to slash carbon emissions and stop global warming. read more

Here is a table showing countries that have pledged more ambitious efforts than before to cut greenhouse gas emissions, either on the first day of the summit or in the run-up to the conference:

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Reporting by Valerie Volcovici; Editing by Peter Cooney

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