Johnson sets out his climate crisis vision as Cameron turns down talks role

PM reaffirms 2050 net-zero pledge but his predecessor declines offer to lead UK preparations for crucial summit

Boris Johnson has set out his vision for forging a new global consensus on the climate crisis promising "we will crack it", amid news that he approached former prime minister David Cameron to lead the UK's preparations for a crucial summit.

Johnson has brought forward the UK's phaseout of diesel and petrol vehicles by five years to 2035, and hastened the phaseout of coal-fired power by a year to 2024. He reaffirmed the UK's pledge to switch to a net-zero emissions economy by 2050, and urged other nations - without naming any - to do the same.