Almost 40 years ago, inventor Martin Cooper walked down a New York street and made the world's first public call on a cellphone. His 2 1/2-pound phone helped usher in a whole new world of wireless communication.
Do you have a good idea? Something that could change the world? NPR wants to know. Our new "What's Your Big Idea?" video contest will showcase the big ideas of people ages 13 to 25. It's all part of our exploration of the process of innovation and invention. So, what's your big idea?
Some 60,000 Americans could have discovered Monday they did not have Internet service. The cause: malicious code created last fall by cyber criminals. What the FBI did and didn't do about it -- and what you can do if your computer is infected.
Until now, 3-D printers have been something of a novelty. The computer-controlled machines create three-dimensional objects from a variety of materials. Now, they are being discovered by everyday consumers. Jon Kalish reports.
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