Think tanks are sources for deeply-researched policy papers and studies.

Some are partisan — on the right or left — and others make it clear they’re trying to be unbiased and simply present information. But who works at think tanks? Who’s compiling that information? And is there diversity?

That’s a large part of the premise of a piece Alyssa Sims wrote for the New America Weekly. It’s called "What Is a Think Tank? First, We Should Ask Who Is a Think Tank?"

We spoke with Sims.