The yo-yo is just a simple toy, right? Not anymore. Rim weights and axle technologies now exploit the physics of angular momentum to make possible all sorts of tricks and traits.
Pipe organs are the largest, most powerful musical instruments on earth. Yet a mere sliver of wood stands between a thundering roar and dead silence
A major hurricane could swamp New Orleans under 20 feet of water, killing thousands. Human activities along the Mississippi River have dramatically increased the risk, and now only massive reengineering of southeastern Louisiana can save the city...