President Trump's transportation secretary said Thursday the FAA's air traffic control system "truly is 25, 35, 40 years old ...

"Sometimes, we can't even buy it on eBay, so we're trying to use 3D printing to craft replacement parts for the system that we use." Duffy made similar comments on "Meet The Press" last weekend ...

The company has created a new way to 3D print -- using lasers. Instead of a nozzle squirting out soft concrete, a high-intensity laser beam melts the powdery simulated regolith to transform it ...