I have participated in Earth Hour the past five years, and it always felt good. I plan to participate again this year, and I hope you will join me.
Earth Hour was started in 2007, and has been growing larger year by year. According to the Earth Hour website, "Earth Hour 2012 took place in more than 7001 cities and towns in 152 countries and territories across all seven continents. Hundreds of millions of people switched their lights off for an hour, and the campaign experienced its biggest growth since 2009."
To find out more, go to www.earthhour.org.