Analysis: Environmental policies in the manifestopublished at 15:00 Greenwich Mean Time 21 November 2019
David Shukman
Science editor, BBC News
It's striking that Labour's policies on climate change come in the manifesto's opening chapter.
And after much internal debate, the date they propose for reducing carbon emissions to effectively zero is much sooner than the government currently envisages.
It's not quite the neat formulation of "net zero" by 2030 than many party activists wanted (and the Green Party has promised).
Instead in one line the document talks of achieving "the substantial majority of our emissions reductions" by 2030.
In another, it mentions putting the UK "on track for a net-zero-carbon energy system within the 2030s".
Presumably that creates enough stretch room to get to 2040 - five years earlier than the Lib Dems' target year and ten years earlier than the Tories'.
In any event, it suggests a much faster transition than was recommended by the government's independent advisers, the Committee on Climate Change, which has to raise questions about its feasibility.