My plan to put Social Security in an ironclad lockbox has gotten a lot of attention recently, and I'm glad about that. But I'm afraid that it's overshadowing some vitally important proposals. For instance, I'll put Medicaid in a walk-in closet. I'll put the Community Reinvestment Act in a secured gym locker. I'll put NASA funding in a hermetically sealed Ziploc bag.

Fake news has been around as long as news has been around.

When people flirt with despair about the future, they are less likely to take the actions necessary to safeguard it, focusing instead on the short-term.

Third world nations are producing too many children too fast...it is time to ignore the controversy over family planning and cut out-of-control population growth.

A majority of Trump's voters were in favor of staying in the Paris Agreement. And if you look at what's really happening in the economy, the economic argument actually is very strongly in favor of the Paris Agreement. There are now twice as many jobs in the solar industry as in the coal industry. Solar jobs are growing 17 times faster than other jobs in the U.S.

There are good people, who are in politics - in both parties - who hold this at arm's length, because if they acknowledge it and recognize it, then the moral imperative to make big changes is inescapable.

The interior of the earth is extremely hot – several million degrees.