Some of the world’s most iconic landmarks will go dark on March 25 at 8:30pm local time to celebrate Earth Hour 2017, the world’s largest movement in support of action on climate change. These will include the Empire State Building, the Space Needle and much of the Las Vegas strip, providing a powerful visual backdrop in support of Earth Hour. As part of Earth Hour, people, cities and businesses around the world will switch off their lights for one hour to draw attention to the urgent need to step up our fight against climate change. With the historic Paris Agreement on climate change now in full force, there’s never been a more crucial time to hold leaders accountable and show strong public support for efforts to stem climate change. “It’s up to us now to maintain the momentum for action,” said Lou Leonard, senior vice president, climate and energy, World Wildlife Fund. “Cities, companies and the American people need to pick up the mantle of leadership on clim...