Steven Koonin is a physicist and director of the Center for Urban Science and Progress at New York University.
Stand up for the facts!
Our only agenda is to publish the truth so you can be an informed participant in democracy.
We need your help.
I would like to contribute
Fact-checking journalism is the heart of PolitiFact. Our core principles are independence, transparency, fairness, thorough reporting and clear writing. The reason we publish is to give citizens the information they need to govern themselves in a democracy.
In a world of wild talk and fake news, help us stand up for the facts.