Background: Government aims to cut emissions by two third by 2032published at 14:10 Greenwich Mean Time 6 March 2018

The Scottish government intends reduce emissions by two thirds by 2032.
Its third climate change plan, published last week, includes a commitment to cut transport emissions by 37% and from buildings by 33%.
Climate Change Secretary Roseanna Cunnigham said the plan was "ambitious", but added there was a "duty to provide leadership" on the issue.
However, climate change campaigners have suggested the plan does not go far enough.
The plan also sets out a target to have half of Scotland's energy needs coming from renewables by 2030, for woodlands to cover 21% of Scotland and for 70% of all waste to be recycled by 2025.