High emissions backdrop New York’s climate week as ex-climate envoy Kerry says ‘business as usual’ for companies

Countries are ignoring commitments they made less than a year ago to shift away from fossil fuels and to provide aid to those most vulnerable to the climate crisis, a host of leading figures have admitted during a gloomy start to a major climate summit in New York.

Al Gore, the former US vice-president, and John Kerry, the former US secretary of state and climate envoy, have led the condemnation of the largest greenhouse gas emitters, led by China and the US, for failing to follow a UN pact signed in Dubai by nearly 200 countries in December to “transition away” from oil, coal and gas.