A brief history of the ancient science of sword making

The sword is the perennial symbol of empires, knighthood, chivalry and fantasy. But it's also one of the world's most ancient technologies, connected with breakthroughs in metallurgy that would change the world. There are even some types of ancient swords so strong that modern science still can't determine how they… » 8/17/11 9:07am 8/17/11 9:07am

Nano-Iron Is Perfect for an Armored Battlesuit

Sure, an armored suit made of iron is great, but what if you could make it out of nano-iron? Nano-iron is harder and stronger than plain old iron, with a sweet crystalline structure sure to impress supermodels. That's probably exactly what researchers at NC State were thinking when they developed this new form of… » 5/29/08 8:00am 5/29/08 8:00am