Energy

Mr Biden is proposing to make US electricity production carbon-free by 2035 and to have the country achieve net zero emissions by the middle of the century.

Reaching net zero requires that any carbon emissions are balanced by absorbing an equivalent amount from the atmosphere by, for example, planting trees.

Once in office, Joe Biden wants to spend $2 trillion over four years to drive down emissions by upgrading four million buildings to make them more energy efficient.

He wants to spend heavily on public transport, to invest in electric vehicle manufacturing and charging points and give consumers financial incentives to trade up to cleaner cars.