Le Journal

The documentary filmmaker, long a chronicler of the American experience, talks about his latest film for PBS, "The American Revolution," and why the end of the Revolutionary War did not mean the end of our nation's revolution.

The checks-and-balances of our government have been increasingly tested in ways our founding fathers never anticipated, yet the Constitution remains, in the words of one expert, "absolutely eternal and timeless."

David Pogue looks at our nation's tradition of pioneering inventors, from Thomas Edison's R&D facility in Menlo Park, N.J., to today's entrepreneurs pitching their ideas to "Shark Tank."

David Pogue looks at the pioneering spirit of innovation that Thomas Edison fostered at his R&D facility in Menlo Park, N.J., where his team helped create the light bulb and the phonograph. He also talks with Google's Steven Johnson and the panel of "Shark Tank" about today's entrepreneurs and whether an inventor's ability to persevere after failure Is a uniquely American trait.