Michael Dudley

An Arizona company is proposing a solar-powered elevated train running between Tucson and Phoenix.

The present threat of a global pandemic reveals the fundamental problem with visions for 'sustainable cities' relying on urban agriculture: there are important medical reasons for separating livestock operations from people.

Wartime urban gardening and the Obama's White House vegetable garden should be our inspiration in our efforts to wean our food systems off of industrial-scale agriculture, writes Michael Pollan, author of "In Defense of Food."

Officials and advocates in Oakland California are warning that the foreclosure crisis is not only leading to evictions, but also growing public health problems and community blight.

Economists worry that Vancouver's tumbling housing market is an indication that Canadians could see a dramatic -- and long-lasting -- decline in the value of their homes.