Green Route USA (20 images)

• Academy-Sciences-Gree...jpg USA, California, San Francisco, Golden Gate...

• Arcosanti-0416.jpg Arcosanti, Arizona. Main building, which serves...

• Cloud-Gate-Kapoor-796...jpg USA, Illinois, Chicago, Millennium Park. Luis...

• Echo-Jaume-Plensa-591...jpg Echo, Jaume Plensa.

• Echo-Jaume-Plensa-592...jpg Echo, Jaume Plensa.

• George-Wolfe-8533.jpg George Wolfe, founder of LA River Expeditions,...

• High-Line-0458.jpg USA, New York, New York. Photo: ©2009 Isaac...

• High-Line-0469.jpg USA, New York, New York. Photo: ©2009 Isaac...

• Portland-Pioneer-Squa...jpg USA. Oregon. Portland. Downtown. Pioneer...

• SmartBike-DC-2103.jpg SmartBike DC. Photo: ©2009-11 Isaac...

• IsaacHH-070620-1158.jpg Roberta Salazar, Co-Director, Birds and Rivers....

• IsaacHH-070620-1093.jpg Roberta Salazar, Co-Director, Birds and Rivers....

• Brooklyn-Grang-3379.jpg Brooklyn Grange farm on a rooftop in Queens,...

• Brooklyn-Grang-3381.jpg Brooklyn Grange farm on a rooftop in Queens,...

• Gwen-Schantz-3435.jpg Gwen Schantz, from Brooklyn Grange farm on a...

• The-High-Line-2039.jpg The High Line, on the West Side of Manhattan....

• The-High-Line-2045.jpg The High Line, on the West Side of Manhattan....

• The-High-Line-2046.jpg The High Line, on the West Side of Manhattan....

• The-High-Line-2052.jpg The High Line, on the West Side of Manhattan....

• IsaacHH-070813-9370.jpg Ina May and Stephen Gaskin have been champions...