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In his book Green to Gold, co-author Andrew Winston argues that "behind the Green Wave lie two interlocking sources of pressure: First, the limits of the natural world could constrain business operations, re-align markets and perhaps even threaten the planet's well-being. Second, companies face a growing spectrum of stakeholders who are concerned about the environment." While the second point is self-evident, the first is debatable. The limits of the natural world have always been a constraint throughout recorded history, driving civilization to find ways around such obstacles. A new wave of young business leaders personified by TerraCycle's Tom Szaky and Imperium Renewables' Martin Tobias--whose stories follow--are part of a long line of entrepreneurs who see opportunity in the...

