International Energy Agency chief economist, Fatih Birol, says efforts to hold back a rise in global temperatures must be stepped up. Plus, the global trade in racing pigeons. Show more
Discover 11,128,835 listings and 280,364 playable programmes from the BBC
International Energy Agency chief economist, Fatih Birol, says efforts to hold back a rise in global temperatures must be stepped up. Plus, the global trade in racing pigeons. Show more