U.S. Senators from the Senate Climate Action Task Force gather before holding the Senate floor to urge action on climate change, on Capitol Hill in Washington March 10, 2014. REUTERS/Yuri Gripas ... more 
U.S. Senators from the Senate Climate Action Task Force gather before holding the Senate floor to urge action on climate change, on Capitol Hill in Washington March 10, 2014. REUTERS/Yuri Gripas (UNITED STATES - Tags: POLITICS ENVIRONMENT) less 
1 / 28
Reuters | Photo By YURI GRIPAS / REUTERS
Mon, Mar 10, 2014 6:31 PM EDT