Scientists made a stretchy new material that could lead to shape-shifting airplanes

Engineers have discovered a way to make an ultra-strong stretchy metal that could enable the creation of shape-shifting aircraft. The new metal is an alloy made up of titanium and nickel. It’s as strong as steel, but it stretches like rubber polymer.

The new material isn’t just metal-like. It’s also very similar to glass, the engineers explain. It was created using a three-step process that allows for the alloy to be both elastic and strong, even at a large range of temperatures. The process...