In the midst of a moral reckoning, America needs a third founding.
The pace of coal-fired power-plant closure is accelerating, thanks to cheap natural gas and environmental regulations.
A buyer's guide
"It's not a black thing. It's not a white thing. It's an American thing."
That's in addition to a recent order from President Obama to expand the mission.
New software and image-capturing techniques are leading the studio further and further into realism.