The miracle of modern road systems is often overlooked today. But the fact that a driveway in Bangor, Maine, connects directly to a parking lot in San Diego, California, via millions of miles of ...
Modern highways are not just roads, they are barriers that slice ecosystems into isolated fragments. Animals follow ancient migration paths and suddenly meet speeding traffic instead of forest or ...
Prosperity begets prosperity: On a global level, economists and historians have shown that places that prospered 100, 500, even 1,000 years ago tend to be more economically developed today. But how?
Some results have been hidden because they may be inaccessible to you
Show inaccessible results