Thousands of genes stick to each ball, and the combination is loaded into a "gene gun"--two small stainless-steel chambers and a vacuum pump--that uses compressed helium.

FORBES: Millions Served

Thousands of genes stick to each ball, and the combination is loaded into a "gene gun, " which consists of two small stainless steel chambers and a vacuum pump.

FORBES: Millions Served

In 1914, in the run-up to war with Germany, a stainless-steel alloy developed to prevent corrosion in gun barrels went on sale in Sheffield, England.

NEWYORKER: A Fork of One��s Own

In this respect, Secretary Clinton has likened our information networks to nuclear power, which can either fuel a city or destroy it, and to steel, which can be used to build a hospital or a machine gun.

CNN: How connective tech boosts political change