George Orwell once wrote that a false belief sooner or later collides with physical reality, usually on a battlefield.

I'm a big fan of Bitcoin ... Regulation of money supply needs to be depoliticized.

Every nation has a moral obligation to safeguard the future.

When it comes to climate, we can all make a big difference. At the most basic level, don't let denial go unchallenged and win the conversation on climate.

When we respond to threats immediately and take action right away, it's usually the threats that we're hard-wired to respond to, the kinds of things that our ancestors survived.

There was never any doubt in our minds that men and women were equal, if not more so.

Population growth is straining the Earth's resources to the breaking point, and educating girls is the single most important factor in stabilizing that. That, plus helping women gain political and economic power and safeguarding their reproductive rights.