What's the meaning of collaboration? For many companies, this is a tricky question to answer. In this Studio C video from GreenBiz Forum 2014, Dow Chemical's VP of corporate sustainability, Neil Hawkins, sits down with GreenBiz Senior Writer Heather Clancy to talk about what this word means at Dow, which has partnered with The Nature Conservancy to create change. "Collaboration is more of a higher calling," he said. "You really have to move mountains to make a difference."