Green policies have often been a killer of electability - but now that we’re in an extinction-level crisis, we need to move the green question outside politics altogether.

‘We all know what to do – we just don’t know how to get re-elected after we’ve done it.” Outgoing EU Commission president Jean-Claude Juncker was describing the solution to the euro crisis, but he could have been describing the climate crisis facing the world. We know how to fix this problem.

Last week’s local and European elections forced the parties of protest down and elevated Green parties across Europe. The centre largely ...