Technologies like GPS and social media are posing new challenges to interpreting the Constitution's guarantees of privacy and free speech. Law professor and journalist Jeffrey Rosen says we're now in an era the Founding Fathers could never have imagined, in which private companies are determining the rules for what can be shared.

Businesses' desire to make sense of vast troves of data means mathematicians are in high demand, creating a recruiting war for talented analysts. DJ Patil, a "big data" expert who now recruits for a venture capital firm, compares raw data to clay: shapeless until molded by a gifted mathematician.

Audi has seen a near tenfold growth in the past 20 years, and the company has also become the new status car for young urban professionals. That's reflected in a viral marketing campaign featuring Justin Timberlake, who's a decade younger than his celebrity counterpart at Chrysler, Eminem.

Theoretical physicist Michio Kaku describes some of the inventions he thinks will appear in the coming century — including Internet-ready contact lenses, space elevators and driverless cars — in his book Physics of the Future.

In the past couple of years, computing, storage and bandwidth capacity have become so cheap that it's altered the scale of what's possible in terms of collecting and analyzing data at every turn. It's a tectonic shift that will continue to affect many things we do for decades to come, one expert says.