“Our obsession with testing the boundaries of folded flight is relatively recent, but our desire to explore and explain the complex world of aerodynamics goes back much further.” A Living History of The Humble Paper Airplane.

+ There’s still time to check out the Illinois State Fair Butter Cow (though doing so could raise your cholesterol.)

+ Surprise, surprise. The cage match between Mark Zuckerberg and Elon Musk is over before it even began. (Give Elon some credit. He completely resuscitated Zuck’s image without throwing a single punch.)