Sir David Attenborough calls for 'radical' action on climate change.
Sir David Attenborough, perhaps the world's oldest environmentalist at 93, has told British politicians they can't be "radical enough" in dealing with the threat of climate change.
He's warned a parliamentary committee that it's essential to stick to a new target to decarbonise the economy...or risk social unrest and mass migration if climate change is not tackled in time.
Duration: 2min 44sec
10 July 2019