February 22, 2013, 2pm PST
BuzzFeed has gathered 38 prime examples of "maps you never knew you needed." And while some are fascinating (such as how much space the world's population would take up if everyone lived in one city) others are just Ludacris.
May 30, 2010, 9am PDT
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.
March 4, 2009, 6am PST
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.
September 25, 2008, 8am PDT
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.'