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 Commemorates the 70th Anniversary of D-Day June 6, 2014	On Board: Travels with the President on the 70th Anniversary of D-Day June 6, 2014	West Wing Week: 6/6/14 or, "Dispatches: Europe" June 6, 2014	President Obama and Prime Minister Cameron Hold a Joint Press Conference June 5, 2014
The First Lady Announces the Mayors Challenge to End Veteran Homelessness June 4, 2014	President Obama Meets with President-elect Poroshenko June 4, 2014	President Obama Commemorates 25th Anniversary of Polish Freedom Day June 4, 2014	President Obama Meets with European Leaders June 3, 2014