— A historian says differences in copyright law explain why Germany surged ahead of Britain and France in the 19th century.

—A few Olympic rule changes explain why so many gymnasts have been falling on their faces.

— The hard rocking, geometry-failing man behind the latest Mars rover.

— An Italian supervolcano could end the euro crisis and help with global warming too!

—A health policy wonk, janitor and a few teachers are among those competing at the 2012 Olympic games.

— Man deposits a junk $95,000 check. His bank accepts it. Hilarity ensues.

 — NASA's flight director has a pretty awesome Mohawk. Buzzfeed has more on the man who guided space rover Curiosity to a safe Mars landing.

— Aziz Ansari's face on rap album covers.

— Aaron Carroll visits the Indiana State Fair, madness ensues.