If you start with the premise that many of the solutions to our global sustainability challenges require smart design and systems thinking, it doesn't take long before you find your way to Autodesk. The 29-year-old design software company has made a series of impressive moves into the sustainability realm over the past few years. It's one of those largely unheralded companies creating the tools used by architects, designers, manufacturers, and -- most recently -- cleantech entrepreneurs to produce the next generation of greener, cleaner, more efficient products.  CLICK HERE to read the full article.