Photo of the Day: 28 Cups of Joe, All at Once

Sen. Sherrod Brown grimaces as he holds a carton of powdered caffeine, which has come under congressional scrutiny. According to the Ohio Democrat, who spoke in favor of regulation alongside Senate Minority Whip Dick Durbin (D-Ill.) and Sen. Richard Blumenthal (D-Conn.), just one teaspoon of the powder contains as much caffeine as 28 cups of coffee.