The President of the USA, Mr Joe Biden, has recently recommitted the US to the Paris climate pact, the international accord designed to avert catastrophic global warming, and ordered federal agencies to start reviewing and reinstating dozens of environmental regulations that had been weakened or rolled back by the ex-President Mr Donald Trump. Biden has elevated tackling the climate crisis among his highest priorities, vowing that ending the pandemic, restoring the economy, addressing racial injustice and curbing global warming will be the four driving causes of his administration.