The Polar Vortex Explained in 2 Minutes

January 08, 2014 | 2:13 | Public Domain

President Obama's Science and Technology Advisor, Dr. John Holdren, explains the polar vortex in 2 minutes—and why climate change makes extreme weather more likely going forward. Learn more at http://wh.gov/climate-change. January 8, 2014.

Download mp4 (88.9MB)

President Obama Speaks to the Press April 17, 2014	The Wounded Warrior Project's Soldier Ride at the White House April 17, 2014	The President and Vice President Speak on Skills Training for Workers April 16, 2014	Press Briefing April 15, 2014
Vice President Biden Speaks at the FIFA World Cup Trophy Tour April 14, 2014	Press Briefing April 14, 2014	President Obama Speaks at the 2014 Easter Prayer Breakfast April 14, 2014	Weekly Address: Ensuring Equal Pay for Equal Work April 12, 2014