From Sydney’s Opera House to the Eiffel Tower in Paris, the lights are going out for an hour at landmarks around the world to call attention to climate change and energy consumption. NBC’s Lester Holt reports.
SYDNEY, AUSTRALIA - FEBRUARY 23: Elle McPherson arrives at the at the official party to celebrate V Australia and Etihad Airways inaugural Abu Dhabi flight at the Sydney Opera House on February 23, 2011 in Sydney, Australia.
SYDNEY, AUSTRALIA - FEBRUARY 22: The Sydney Opera House sails are illuminated for Teal Ribbon Day in honor of women who have lost the battle with ovarian cancer on February 22, 2011 in Sydney, Australia. For the first time the Sydney Opera House was lit teal for the launch of Teal Ribbon Day, to r