The government also has to get the public rules right. That means putting a price on carbon, so the cleaner forms of energy become more competitive. As soon as that happens, a tidal wave of new capital, innovation and entrepreneurship will flood into the clean energy space - creating new jobs and opportunities for Americans of all walks of life. We did that for the internet, with public investments in the basic system through the Pentagon, followed by rules that encouraged innovation and competition. And that is why the internet took off in the United States first.

The message is going to be the same. It's very simple. We're either going to turn to each other or on each other.

Even if we can solve the carbon problem for coal, it is still a non-renewable resource. At some point, coal supplies will drop.

The dirty energy crowd can be offset only by the power of the rising clean energy sector and the American people, aroused across party lines.

Playing the villain gets you higher ratings on reality TV and saying outrageous stuff on Twitter gets you more followers.

Hillary Clinton did try to reach out to the Sanders voters with policy concessions, but Sanders voters, especially his most activist core, are process people. They're not policy wonks. They're people who want big money out of politics. They're people who want fairness from the DNC chair. They're people who want every vote to count. They're the people who don't like Wall Street money. Right? They're primarily about the process of politics and whether or not it's fair and whether or not big-money elites are rigging things in your favor.

The question is: do we pay a little bit more now? Or do we pay a whole lot later? For the equivalent of a postage stamp a day for each American, we can put a price on carbon today that will send a signal to private capital to invest in the clean technologies of tomorrow. Taking a vast portfolio of new energy solutions to scale will ultimately drive down costs through competition.