Before Danielle Thomson was our TED Prize researcher, she wrote trivia for Who Wants to Be a Millionaire? and spent years finding difficult-to-source info for The Late Show with David Letterman. And she has quickly established herself as our staff secret weapon. When one of us can’t get our hands on a piece of information that we need, we turn to Danielle and — voila! — there it is. We asked Danielle to share some of her best research tips to help you in those “why can’t I find this?” moments. Here’s what she had to say.