On Saturday, March 19, millions of businesses and individuals worldwide will celebrate Earth Hour by turning off all lights and electronics from 8:30 - 9:30 PM local time. The voluntary rolling blackout that includes 350 of the world’s most iconic landmarks such as the Eiffel Tower, the Empire State Building, Taipei 101 and the Sydney Opera House, is more than a symbolic gesture — It is proof of what can be achieved if we all unite to reverse climate change.