This week: A beautiful image of a triple crescent moon, building a better battery, a computer chip modeled on the human brain, mind controlled telepresence robots aid the disabled, and a tiny chip sized stand in for the human body. Cassini Photographs Triple Crescent Moon Over Saturn A single crescent moon is a familiar sight in Earth’s sky, but with Saturn’s many moons, you can see three or even more. The three moons shown here — Titan (3,200 miles or 5,150 kilometers across