A record number of countries and territories participated in this year's event.
The initiative involves 7,000 cities across 172 countries.
Like his two predecessors, Pope Benedict XVI and Saint John Paul II, Pope Francis has taken a serious interest in promoting
Policy experts warn that the Paris conference may be the last meaningful chance for the international community to reach
Those negotiations are important, but the games really begin next week. March 31st is the first checkpoint when several countries, including the United States, will announce new targets to reduce climate pollution and other commitments to support climate action.
The Great Wall. Times Square. The Eiffel Tower. You can see what your country is planning for Earth Hour here, and if you
From Mother Nature Network's Michael d'Estries: From Miranda Kerr to Leona Lewis, celebrity ambassadors have always been
The initiative, led by the World Wildlife Fund, is meant to raise global awareness about climate change and extend beyond
Is Earth Hour, the annual ritual in which people the world over turn out their lights as a show of solidarity in the fight against climate change and other environmental issues, a waste of time and energy? Bjorn Lomborg certainly thinks so -- but what is accomplished by niggling over the metrics of a global awareness campaign?
Urge your community to participate and send a small ripple of change out into the world. Then switch off for an hour -- have a candlelit dinner, host a dance party in the dark. Who says change has to be hard?