People in red states and blue states can agree that we are a nation blessed with extraordinary natural wealth and beauty, which we would be foolish to waste; therefore conservation and efficiency are values we all can share.

We are trying to reinvigorate our stagnant energy sector, to create avenues for new wealth. Clean energy innovation, job creation and energy independence should be common ground for all Americans.

The progressives have a challenge. Part of it is that you now have a lot of progressives who feel that 50 million, 60 million people voted to endorse the toxic parts of Donald Trump, that suddenly we now are in a country, you know, surrounded by people who, you know, are proud to be, you know, a part of this alt-right thing and they think it was an alt-right takeover.

I've had a chance to meet some of my civil rights heroes and, more recently, members of the young generation around [Barack] Obama, people in their teens and twenties who were determined to make history and who were too idealistic to think that what they were trying to do might be impossible. They proved that visionary pragmatism can win over the majority. That comes from a particular place in your heart that generation Y is offering America. They just can't afford to be naive now, in terms of the ferocity of the opposition.

Now we stand at our own crossroads, looking out upon two futures: one with rising temperatures, rising oceans, and rising violence on a hot and strip-mined planet and another with expanding organic harvests, growing solar arrays, and deepening global partnerships on a green and thriving Earth.

I think we have every reason to hope for the best but expect and prepare for the worst.

Clean coal represents a breakthrough in the marketing of coal, but not in the science of burning coal.