What is the UK doing about climate change?
The UK government declared 2020 a "Year of Climate Action".
As well as the targets for changing to electric cars, the government has pledged to reduce the UK's carbon emissions to 'net zero' - which means cutting emissions drastically and absorbing as much carbon as it produces - by 2050.
This means emissions from areas like transport, farming and industry will have to be avoided completely or offset by sucking carbon dioxide out of the atmosphere.
Boris Johnson has said that he wants fighting climate change to be one of his government's biggest priorities and he has made a series of announcements around renewable energy, national parks and protecting the environment.