There are some technologies that can actually capture emissions of, for example, CO2, and those technologies right now are relatively expensive per ton of CO2 that you can actually eliminate from being omitted. But, there are also, of course, other options, there’s energy efficiency, there are alternative sources of supply, such as solar and wind, and there are even switches to other sources of fuel, such as natural gas.
October 3, 2013, Nathan Hultman,
BBC