The United Kingdom’s Conservative government has said climate laws will be tightened to cut carbon emissions effectively to zero.
Under current law, emissions must be cut by 80 per cent by 2050, but government ministers have said this does not go far enough.
British media reports no details of the law change have been given, and critics said the UK was failing to meet even current targets.
The global climate agreement, which was finalised at a summit in Paris in December, commits to keeping global temperatures “well below” two degrees Celsius above pre-industrial times and limit the amount of greenhouse gases emitted by human activity.
The British news service BBC News reports that speaking in the House of Commons, energy minister Andrea Leadsom said the government believed it was necessary “to take the step of enshrining the Paris commitment to net zero emissions in UK law”.
“The question is not whether but how we do it, and there are an important set of questions to be answered before we do,” she said.
“This is an example once again of the House demonstration on a cross-party basis a determination to tackle climate change.”
Ex-Labour leader and former Energy and Climate Change Secretary Ed Miliband told BBC News: “This will send a signal to other countries this is the right thing to do.
“We very much welcome what they (ministers) have done, now we’ve got to make sure the government deliver on it.”
While pledging their allegiance to very demanding CO2 cuts, Conservative government ministers have made a range of policy changes that are predicted to increase emissions.
Ministers expected that by 2030 the UK would be mainly powered by nuclear, offshore wind and gas with carbon capture and storage (CCS) technology, a largely unproven and expensive process for dealing with carbon emissions.
It has also turned its back on the cheapest forms of renewable energy, onshore wind and large scale solar energy and increased the tax on small low-emissions cars so the owner of a Toyota Prius pays as much vehicle excise duty as a high-performance Porsche.
The UK government climate law announcement follows the tabling of an amendment to the Energy Bill by Mr Miliband and a cross-party group of MPs from six parties: Labour, Conservative, Liberal Democrat, Green, Plaid Cymru and SDLP.