On March 31 at 8:30 pm, WWF’s Earth Hour will begin. Started in 2007, Earth Hour is a symbolic act to get us thinking about our planet and our impact on it. But more than that, it’s also part of a simple idea to start an environmental resolution in 2012 -- this is not only about one hour in the dark, it’s about a brighter future. But even though you're switching off your lights and electronic appliances for the environment this weekend, you don't...