A period of heavy meteorite bombardment after Earth's formation may have peppered Earth's outer layers with useful metals. (p. 11)

Target narrows after LHC experiments suggest a new lower estimated mass for the elusive particle. (p. 8)

The region's largest tremor in recent history hit northwest of Richmond, felt over much of the East Coast.

In China, new neutrino detectors may help shed light on matter-antimatter imbalance in universe.

The Toyota Prius isn’t exactly a muscle car. But the magnets under the hood certainly pack a punch. Pound for pound, these permanent magnets are some of the most powerful on the planet. They generate fields 10 times stronger than those of typical refrigerator magnets, helping the hybrid car’s motor and generator to turn the wheels and charge the battery. The secret to the magnets’ intense fields? About three pounds of alloy made with rare earth elements. Rare earths, 17 chemical elements found mostly in an appendage to the periodic table, have long been the darlings of solid-state phys... (p. 18)

Leonardo of Pisa, also known as Fibonacci, is best remembered today for introducing a sequence of numbers: 0, 1, 1, 2, 3, 5 and so on, each number after 0 and 1 equaling the sum of the two before it. The Fibonacci sequence is closely connected to the “golden ratio” used in art and architecture and turns up frequently in mathematics and nature. For Devlin, NPR’s “Math Guy,” Leonardo of Pisa is much more:  he’s the man who brought arithmetic to the West — a celebrity of 13th century Italy. “The likes of Apple Computer’s Steve Jobs and Microsoft’s Bill Gates will always... (p. 30)

Physicists have developed a device that can hide objects in visible wavelengths. (p. 16)