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 4:20pm7/26/15 4:20pm

630 Coffee Stirrers and 1,260 Cocktail Sticks Make Me Feel Woefully Inadequate

Nick Sayers is a geometric artist who uses everyday objects to create unusual models. His latest creation is the Hyperbolic Coffee Cactus, a sculpture whose design is both awe-inspiring and humbling. »7/11/11 9:40pm7/11/11 9:40pm

Sayers' latest creation is inspired by a dodecahedron with 12 geometric projections. Each projection is half an…