ScienceEarth Hour from BerlinTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScienceNippard04/05/2012April 5, 2012Last weekend saw millions of people around the world turn off their lights for a symbolic moment. Since 2007, Earth Hour has spread around the world, drawing millions of participants from dozens of countries.https://p.dw.com/p/14YCWAdvertisement Interview: Cinnamon Nippard, Berlin