Switchin off the lights for an hour may not end the global warming immediately or effectively. But it's a good move. I'll definitely support. I have even asked my sister who has got a zwinky account to paste the embedding code in as many zwinky profile that she knows. Tha't our support to our fellow human beings who have got some good intentions. But what this world need is that all of us switch off negative and waste thoughts. Collective meditation or contemplation would yield a better outcome!