Based on core samples from Antarctica, CO2 concentration in the atmosphere oscillated between 200 to 300 ppm for almost a million years. Since the industrial period, carbon emissions have climbed to over 400 ppm. The impact on coastal cities in the US has been significant, and Hurricane Sandy was a wake-up call for New York and the nation. Doug Staker, an engineer working on cutting-edge carbon capture technologies, talks about the importance of environmental stewardship. Engineers can help drive CO2 reduction back to levels that prevent increased temperatures worldwide.