The annual event, which is organized by the World Wildlife Fund, aims to engage "a massive mainstream community on a broad range of environmental issues."
It encourages residents and businesses to shut off the lights for one hour, from 8:30 p.m. to 9:30 p.m. local time this Saturday, March 29.
How to Participate
Easy: turn off the lights for an hour! But that's not it—here are other ways to get involved.
- Create a local Earth Hour event or find one happening nearby.
- If you're using candles instead of electricity, EarthHour.org recommends 100 percent beeswax or soy candles, which are better for the environment.
- Check out the newly created Earth Hour Blue, a crowdsourcing and crowdfunding platform to support environmental projects.