Plan for new M4 relief road near Newport sparks climate debate

It will be the biggest infrastructure decision ever taken by the Welsh government – whether to build a new stretch of motorway to bypass a notoriously jam-prone section of the M4 near Newport.

Campaigners argue it’s vital for the economy of Wales.

But some ask if it is right to spend an estimated £1.4 billion on a new road, so soon after the Welsh government declared a climate emergency.