Britain made a legally binding commitment on Thursday to bringing all greenhouse gas emissions to net zero by 2050, setting it the first major economy in the world to pass laws to end its contribution to global warming by mid-century.
The target was more ambitious than the previous goal of cutting its greenhouse gases by at least 80 percent on 1990 levels by mid-century, which was enshrined in the Climate Change Act in 2008. The amendment of the 2050 goal, approved by the House of Commons and House of Lords this week, came into effect on Thursday.
The net zero target was recommended by the Committee on Climate Change, Britain's independent climate advisory body. It means any emissions would be balanced by schemes to offset an equivalent amount of greenhouse gases from the atmosphere, such as planting trees or using technology like carbon capture and storage.
Source: http://www.xinhuanet.com/english/2019-06/28/c_138179264.htm