Can You Solve Isaac Newton's Tree Puzzle?

This week’s puzzle is not about gravity, though you’d be excused for suspecting as much. After all, when most people read “Isaac Newton” and “tree” in the same sentence, they think also of falling apples. But this week’s puzzle, which is widely attributed to Newton, is actually an exercise in orderly arboriculture. »7/26/15 3:30pm

A Glimpse Inside The Secretive World Of Human Cannonballs

Once she has lowered herself into the mouth of the cannon and slid down to the base of the barrel, Gemma “The Jet” Kirby performs a series of breath-synchronized movements that seem more suited to yoga or lamaze than to one of the deadliest stunts in circus history. This sequence is the culmination of hours of… »4/30/15 2:32pm