Part I of a three part sustainability series. Even if you don't believe in climate change, you must believe in sustainability. Sustainability is the key to our future--it also has deep roots in our past. So where did the sustainability movement originate? How did we first influence our communities to think local, act global? How do we continue to do so? Educating our neighbors, family, and friends on the importance of sustainable practices can help inspire communities to act together to support our long-term well-being. This article was published in the Huffington Post.