The BBC's science editor David Shukman has been a witness on the frontlines of global warming. In this programme, he explores how we got here and what it means for the future. Show more
Discover 11,128,835 listings and 279,777 playable programmes from the BBC
The BBC's science editor David Shukman has been a witness on the frontlines of global warming. In this programme, he explores how we got here and what it means for the future. Show more