It's that time of the year again! WWF are calling to everyone on the planet to turn their lights off for an hour on Saturday 28th March at 8:30pm GMT.
All you have to do to participate is turn your lights off. Get some candles. I participated last year (Reminded last minute by Google that changed their homepage for the occasion ;). You can also sign up here to show your support, it'll only take you a couple of minutes and it's for a good cause.
There are a bunch of resources here for your blog, banners, etc - but what's pretty cool is they also created a highly fashionable augmented reality 'Earth in your hands' thing - if you never saw 3D augmented reality, the concept is that you print out a specific design handed out and then show that to your webcam on the site, and voila! A 3D design appears in your hands. Pretty nifty, heh?
Even the pandas are doing, so why not you? Crazy pandas...