In 2008 the UK made an all-party legally-binding commitment to reach net zero carbon emissions by 2050. Since then the consensus has broken down and analysts doubt that current government policy has any chance of reaching that goal. Tom Heap, Helen Czerski and an expert panel stress-test net zero. Is it still achievable? Is it even politically possible in a world of trade wars, Trump's anti-environment agenda and the rise of Reform?

Producer: Emma Campbell

Rare Earth is produced in association with the Open University