We need to aim high - in the area of 20-25 percent - to create the urgent demand for new technologies, manufacturing plants and green jobs.

People can tell if you don't like 'em. African Americans can tell we're not welcome in the Republican Party no matter how many times they say we are. All the signals that it's a party that tolerates anti-black racism is very clear.

Apparently, the fossil-fuel industry's strategy is to convince the American people that we should just burn all the way through the last of our oil and coal reserves.

Rich countries do civil wars with tweets and votes.

Hatred of the people who hate you, that is the opposite of being the enemy. I want to fight fire with water wherever I can.

There would be a cost for dumping carbon into our atmosphere and a cap on total emissions. The government must make a clear and firm decision - terminating the idea in our society it is free to pump infinite amounts of carbon into the air. Once that happens, private capital will flow even more aggressively into developing and deploying the alternative, less-polluting technologies.

Local politics matters a lot.