Environmental T Shirts

I'm looking for t-shirts with drawings rather random (not funny drawings) which are evaluated on environmental issues. Any advice on companies or websites? If the proceeds going to charity is even better. Thank you. Here's an example:

http://www.bluefly.com/California-Rising ...

Company skating "Element" is a company skating environment which can be anything you want.

I like this site for a wide variety of t-shirts.
VVV
http://www.palmercash.com/c-191-gifts.as ...

http://www.bant-shirts.com/

http://www.jimmorris.com/