Now, here's a good question: should serious people focus on global political instability - terrorism, failing states, nuclear weapons - or should we focus on global climate instability - droughts, floods, extreme weather? Here's the correct answer: yes, both, because climate disruption will make every other national security problem worse.

We need to invest in job training programs, especially those that include child care, transit stipends and paid apprenticeships and internships.

People care. Their hearts are open, but people don't know exactly what the Dreamers are going through, or what sanctuary cities are for, or what's positive about the American Muslim community. When you don't know a lot, you can't do a lot.

Steve Bannon is the architect of the entire blitzkrieg that we're seeing against American values and the American people.

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.

I'm willing to forgo the cheap satisfaction of the radical pose for the deep satisfaction of radical ends.

To shift America (and the world) to a cleaner energy economy, millions of people will have to go to work in new industries. This necessary shift opens up tremendous new opportunities for work and wealth creation.