Former Vice President Al Gore urged Senate Democrats to move forcefully to address global warming in a closed-door lunch Thursday, 13 years to the day after the Supreme Court ended his 2000 presidential bid.

Gore's talk came at a time when climate policy appears to be gathering momentum in Washington: this week the White House announced it was bringing on John Podesta, a prominent Democratic strategist and environmental activist, to help oversee energy and climate change for the president.