Ecological Footprint

When thinking about the right way to invest in renewable energy, it's important to realize the different land use impacts of solar, wind, biofuels, along with coal and nuclear, says Clinton Andrews of Rutgers University.

Bill Rees, creator of the ecological footprint concept, warns that economic growth needs to slow down greatly if we want to maintain a civilized life on Earth.

Wired Magazine calls Mitchell Joachim 'a Frederick Law Olmsted for the 21st Century'. Joachim is at the forefront of thinking about the ecological footprint of cities, and one of Wired's 'People the Next President Should Listen To.'