
For a brief period tonight, some parts of the world will go dark. It's Earth Hour
CNN
Started by the World Wildlife Fund, Earth Hour is an annual event meant to spread awareness about sustainability. It happens at 8:30 p.m. on March 27.
How did it start? Earth Hour is an annual tradition in which people switch off their lights to spread awareness about sustainability and climate change. Started by the World Wildlife Fund, it takes place on March 27 from 8:30 p.m. to 9:30 p.m. local time. (And it's not to be confused with Earth Day)More Related News