I read about Guerrilla Gardening (complete with Seed bombs) at GuerrillaGardening.org.
I wrote an entry about this at my action blog at Param Vaibhavam.
There is such scary stuff.
Read this Rediff special on how most Indian cities are going to go dry - by 2020.
So, we can crib about it, or curse government and our neighbors, or do something about it.
1 Tree / Person / Month is my idea.
And look at this TED.com presentation (again) where they regenerated an entire rainforest ecosystem - because one guy was passionate about saving orangutans.