Getty Images

As businesses wise up to the coming mandates for energy conservation and the need to control carbon emissions, environmental groups have also grown to be more flexible in their approach. The Sierra Club, in particular, has begun to consider natural gas and nuclear power as bridge energy sources before a purely green, renewable energy economy is realistic.

As businesses wise up to the coming mandates for energy conservation and the need to control carbon emissions, environmental groups have also grown to be more flexible in their approach. The Sierra Club, in particular, has begun to consider natural gas and nuclear power as bridge energy sources before a purely green, renewable energy economy is realistic. Are these kinds of compromises possible, on the part of big industry and environmentalists, and when will that green economy become a reality?

Guest:

Carl Pope, executive director of the Sierra Club