Advancing the politics of public transportation and public spaces is not easy. Danish architect Jan Gehl and his firm Gehl Architects, however, have a track record of success with cities around the world.
If you fancy yourself a modern-day John Wesley Powell, but to this point haven’t climbed on a raft headed Grand Canyon way, Google recently released a series of “Street View” style photos from the very bottom of that most famous natural landmark.
In time for Earth Day, American Rivers has released its annual list of the country's most threatened rivers. Topping this year's list is the Colorado River, a waterway so dammed, diverted and over-tapped that it ultimately "dries to a trickle."