Michael Dudley

<p>A new documentary film looks at the achievements of Michael Reynolds, who for 20 years has been building eco-friendly, off-grid "earth ship" houses built out of natural materials and car tires. </p>

<p>The American Human Development Project has determined that the U.S. demonstrates huge disparities in life expectancy and other well-being indicators, based on geography, race, sex and class.</p>

<p>Following a series of Segway pilot tests in other Canadian cities, the town of Sylvan Lake Alberta is loosening up laws restricting them the space age vehicles to private property.</p>

<p>Walkable Communities founder Dan Burden believes walkable communities contribute to greater happiness -- and that Silicon Valley has a thing or two to learn from Denmark.</p>

<p>A proposal to annually burn tens of millions of car tires to produce electricity at a facility in Erie, Pennsylvania is raising concerns among environmentalists and regional residents over mercury and other emissions.</p>