Delegates celebrate as historic climate pledge adopted – video

Clapping and cheering erupts as nearly 200 countries adopt a global climate agreement on Saturday that for the first time asks all countries to reduce their greenhouse gas emissions. French foreign minister Laurent Fabius pounds his gavel to mark the agreements adoption, prompting jubilation in the Paris conference hall. Some delegates respond with tears of joy as others embrace. More than 190 countries had been negotiating the pact for four years after earlier attempts failed