Since 2007, one day a year has marked Earth Hour, during which folks across the globe shut off the lights and unplug for an hour to draw attention to energy overuse and climate change. This year's event is now upon us: Earth Hour 2011 is tonight at 8:30 p.m. (local time). The event has grown since its origins, with 2009 and http://laist.com/2010/03/27/lights_out_for_earth_hour_tonight_a.php counting 88 countries and 128 countries, respectively, that took part. more ›

Tonight all over the world people, businesses, and landmarks will be turning out their lights for just 60 minutes as part of the annual effort to promote awareness of climate change and energy conservation, Earth Hour. more ›

Los Angeles is one of the many global cities participating in Earth Hour tonight. The annual event, which seems to be gaining popularity with each year, calls for everyone to turn off any non-essential lights for just one hour, and that hour is tonight from 8:30-9:30 local time. more ›

Tomorrow night, cities all over the world will be participating in Earth Hour, when citizens are asked to turn out the lights and go unplugged for one hour to inspire awareness about global climate change and energy conservation. The annual event originated in Sydney, Australia, and is being championed in major metropolitan areas world-wide. more ›