I would like to remind everyone:

From 8:30 to 9:30pm local time, hundreds of millions of people around the world will switch off their lights and participate in Earth Hour, the largest climate awareness event ever held. As climate change will effect people on every continent, we think a united, global call for action to address the problem is needed.

Turning off the lights won’t solve the climate crisis, but it’s a start. Earth Hour gives individuals a simple, meaningful way to participate in a global call for change. As U.N. Secretary-General Ban Ki-moon stated, “Earth Hour is a way for the citizens of the world to send a clear message — they want action on climate change.”

So I hope you’ll gather your friends and family and join me, and hundreds of millions of others, in turning off the lights. And please include the light in the fridge. (Source)