Do your bit for the earth on Saturday

Earth Hour 2010 is coming up on Saturday 27th March – when turning off the lights for an hour at 8.30pm local time aims to send a clear message to governments around the world regarding climate change.

Last year hundreds of millions took part around the world, and if you’re interested you can sign up to the campaign, share some videos, embed a funky widget or share your support.

Probably best not to compensate for the darkness by turning up the brightness on every gadget you own.

Whether or not you’re a believer in the need to combat climate change, it’d make an interesting case study around the spread of an idea, the level of effort vs participation, and whether or not it has an effect on policy and decision-making by governments.

Between that and Twestival today, there are a couple of good opportunities to do something worthwhile.