Scientists can determine with uncanny accuracy just how much your snack is annoying the person next to you: The crispiness of apples and other foods has been measured according to the volume of sound produced when a person takes a bite.
Coxs Orange Pippin apples stored by different methods were recorded and analyzed in a 2000 experiment. One test found a 90-percent correlation between how crisp eaters thought an apple was and the volume of the sound generated while eating.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.