Bernie Sanders on climate change: ‘You can't just talk the talk’ – video

Vermont senator and Democratic presidential candidate Bernie Sanders unveils a new bill aimed at stopping future production of oil and other fossil fuels on US land. Sanders made the announcement along with the bill's author, Senator Jeff Merkley. The bill is called the Keep it in the Ground Act. Sanders also laid down a challenge to Barack Obama to categorically reject the proposed extension of the Keystone XL pipeline