3-D printers are being used extensively in industry, research, teaching and hobbies, printing with metal, plastic and even edible material such as dough. Researchers at Carnegie Mellon University in Pittsburgh are experimenting with another kind of 3-D printing — with yarn. VOA’s George Putic reports.
A U.S. federal judge has blocked a Texas man from putting plans on the internet showing people how to make their own plastic guns right in their homes as President Donald Trump questioned whether the action should have been approved by his administration to begin with. It's a controversy drawing comments from states, the Senate, and President Trump himself. VOA's Bill Gallo reports.