Scientists have welcomed the news - but say it does not guarantee dangerous climate change will be avoided.

They urged Mr Johnson to impose policies to back up his ambitions - currently the UK is slipping behind its existing targets.

Should be obvious, but with widespread headlines and discussion on ambitious goals as successes, this bears repeating. Setting aggressive climate goals is terrific and should be celebrated, but they can't be considered mission accomplished and we should certainly be wary of any leaders who put the goals out there without working swiftly on the how, lest those goals almost be the equivalent of political greenwashing where a leader can claim they're making climate-related strides without doing any of the real hard work to back it up.