I just thought I would mention this:
http://www.earthday.net/earthday2010
The year 2010 is the 40th Anniversary of Earth Day, which will occur come April.
Does this mean anything? Honestly, no. 2010 Also happens to be the year that Mars' opposition with Earth will occur (
Opposition), NASA will retire the Space Shuttle Program and replace it with Project Constellation...you get the picture
If it is green-focused, i would think that it has to do with sorting, clearing an area, or moving "waste" from the field into basically a giant receptacle for your alliance. I dunno.