The cost of fossil fuels is going up, while the cost of solar power is going down. The tipping point has already arrived in many developing countries. In the US, it could happen by 2020. A decade later, fossil fuels could be economically obsolete. We've heard such predictions before, and the transition will not be easy. Coal, Big Oil and public utilities won't lie down. Government policies will be crucial. We look at the challenges posed by inevitable change in technology.
(This discussion originally aired on October 30, 2014)