Cheaters never win, but at least they can use Python. Like many other nerds, I love word puzzles. I'm not always great at them, and I don't always have time to do them, but when I do, I really enjoy ...

A behind-the-scenes blog about research methods at Pew Research Center. For our latest findings, visit pewresearch.org. Identifying causal relationships from observational data is not easy. Still, ...