Plants

As Singapore's population booms, officials are working through plans to help the city absorb its people but also provide them with adequate green space.
Jul 31, 2011   The New York Times
Plant life is taking over the abandoned houses of Detroit. These photos from James D. Griffioen offer a tour.
Aug 26, 2009   Sweet Juniper
<p>A team of researchers has shown that in urban landscapes -- such as in the cracks of sidewalks -- plant species must evolve their reproduction habits to stay alive.</p>
Mar 8, 2008   MSNBC