The Supreme Court is opening its new session. On the docket: several cases that touch on technology. We talk with legal scholar Jeffrey Rosen about cases involving video games, privacy, and whether AT&T counts as a person in our conversation. Also in this show, the Senate wants commercials to be quieter. What might that sound like?

Scientists in the Midwest are researching ways to rewire the brains of people who've suffered traumatic brain injuries. We speak with Pedram Mohseni and Randolph J. Nudo about their work, which has recently been given a $1.44 million grant by the Defense Department.

A new bill may change what you're able to see on the web. The bill is aimed at going after material online, like pirated movies, that violates copyright laws. It has bipartisan support in the Senate, but advocates of a freer, less regulated Internet say it takes too broad an approach to law enforcement. We explore the bill and get an update on it.

If you call 911 from a land line, dispatchers can identify your location and send someone to come help you. If you call 911 from a cell phone, you're a lot harder to track down. Find out what the FCC is doing to change that.

Unlike common computer viruses that go after your personal data or simply mess with your computer, a new worm is on the loose called Stuxnet, which targets software that controls infrastructure. Experts weigh in on what this means for the debut of Iran's new nuclear power plant, which has been infected by Stuxnet.

There are only a few days left before voting ends for the GE Ecomaginations Challenge. And one of the ideas in the contest is to convert thousands of square miles of pavement into solar panels. We talk with Scott Brusaw about his idea and how it would work.

Air pollution has been a killer since the dawn of the industrial age, yet until recently scientists didn't know how dirty the air was in most of the world. New maps from satellite images and computer modeling are finally giving researchers a clearer view of this global problem.

The FCC is deciding whether to approve a plan to make unused fiber optic cable, or dark fiber, available to schools and libraries. That move could have a big impact on how you use the Internet. We talk with Christian Sandvig from the Project on Public Policy and Advanced Communication about the plan.

It's become harder to turn down a friend request on Facebook. You used to be able to just click "accept" or "ignore," but the social network site has changed those options to "accept" or "not now." That may change the way you Facebook. We talk with B.J. Fogg at Stanford University and Clary Shirky, who's written on the social effects of technology, to get their perspectives.

Soon, the FCC is expected to open up unused parts of the broadcast spectrum, also known as "white space." We talk with Glenn Fleishman from Wi-Fi Networking News about how the spectrum works. And Tim Wu from Columbia Law School weighs in on companies that may use that space and what it means for Internet users.