Via my Google news feeder, I was alerted to this (thanks Child of Africa!):

What would happen if every blog published posts discussing the same issue, on the same day?

One issue. One day. Thousands of voices.

On October 15th, bloggers around the web will unite to put a single important issue on everyone’s mind - the environment. Every blogger will post about the environment in their own way and relating to their own topic. Our aim is to get everyone talking towards a better future. Check it out.