mass transportation

The U.S. started 2011 with the highest gas prices ever for January. That doesn't bode well for the coming months, but the sky isn't falling. Here's what you can do about those higher fuel costs, including how to make investments that will profit from them.

People love trains; they are fast and avoid all the hassles of traffic. But they aren't used in the U.S. like they are in Japan and much of Europe. Why? They are too slow. Obama and a number of governors want to change that, with an $8 billion investment in high-speed rail using trains that go...