Biden says landmark climate bill is winning against special interests – as it happened

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The US is the world's second largest emitter of greenhouse gases and the Inflation Reduction Act is widely forecast to slash these emissions, by as much as 48% by 2035, from 2005 levels, according to one analysis.

These forecasts have a relatively wide range of estimates due to uncertainties such as economic growth but even in the most optimistic scenario the US will require further measures if it is to get to net zero emissions by 2050, as scientists have said is imperative if the world is to avoid catastrophic climate impacts.