The Eastern European city found a way to offer free rides to citizens for a small cost to government. The U.S. has tried it before. Will cities try it again?

As urban populations have grown, cities have become centers of innovation.

It's something more than 30 U.S. states and cities have tried and failed to do.

Nearly all Americans support organ donation, but only a third are registered donors. A study in the United Kingdom offers insight into what gets people to give up a part of themselves.

Thanks to desalination plants, Israel is no longer worried about its water supply. So why aren't there more desalination plants in the United States?