An aviation safety theory may explain a plane crash in Japan this week. The "Swiss cheese" theory argues that crashes are often caused by a series of small errors. A Japan Airlines plane crashed into ...

After the Brexit referendum, it became clear that the people had spoken. But in the days that followed, it also became clear that no one knew what had been said. And nowhere is this more apparent than ...

Switzerland conveys millions of hikers to alpine landscapes on trains, buses and gondolas. Is a Swiss-like transportation network the solution to overcrowding in U.S. national parks? The Five Lakes ...