A robot from the future is made entirely of liquid metal in the film "Terminator 2: Judgment Day." But liquid body armor may be less fiction, more reality for modern soldiers.
A revolutionary new armor relies on a liquid that hardens when something hits it, promising unprecedented protection while letting soldiers move freely, unrestricted by bulk and weight.
Protection for warriors has long meant weight and bulk from ceramic plates and Kevlar that cover large areas of the body but reduce maneuverability, agility and speed. And in war zones like Iraq and Afghanistan, temperatures can reach 120 degrees Fahrenheit, meaning heavy armor can also accelerate fatigue.