On March 19, from 8:30 pm to 9:30 pm, we'll be switching off the lights for Earth Hour 2016 -- a worldwide grassroots movement uniting people to protect the planet. Organized by the World Wide Fund (WWF), Earth Hour was famously started as a lights-off event in Sydney, Australia in 2007, and the Philippines in 2008. Since then it has grown to engage more than 7000 cities and towns worldwide, and the one-hour event continues to remain the key driver of the now larger movement. The event is held worldwide towards the end of March annually, encouraging individuals, communities households and businesses to turn off their non-essential lights for one hour as a symbol for their commitment to the planet. What lights can be safely switched off? That is a decision that has to be made individually but usually the overhead lights in rooms (whether it is your house or a business), outdoor lighting that does not impact safety, decorative lights, neon signs for advertising, television...