Most of us think of economics as the "dismal science." Full of abstruse theories, graphs, regressions, let's face it: There's nothing sexy about a graph, or a liquidity trap (unless the liquid is gin). But here's what you may not know about economics: it can answer questions like, "why do female fashion models earn so much more than male models?" and "why do women's clothes button differently then men's clothes?" And it can answer the age-old question, "why is playing hard to get so darn sexy?" Well, today, we've got the Economic Naturalist on to explain how economic principles can answer these questions... and more. (Can you guess why brown eggs are more expensive than white eggs? Why drive-up ATMs have Braille keypads?) Take the challenge... Have you wondered why we do something one way? And can you guess why we do it that way? We want your observations... a question and answer based on the newly "sexy" science.