TreeHugger has a few favorites when it comes to industrial designers and design firms; we can't really think about the words without including people like Bill McDonough, Ross Lovegrove and the Salm brothers at MIOculture. They represent some of the best things about sustainable industrial design: aesthetic innovation, form following function and minimal tread left on the planet, and we could go on and on about each of them. But we know there are more out there. Who else should we know about? What designers and firms are at the top of their games when it comes to industrial design and sustainability? Please leave your ideas in the comments below.