Seattle and other cities have shown that it isn't that hard to live without the supposed convenience of the wasteful bags.

Other U.S. cities can expect to have similar visual blights as Alberta oil is sent to refineries near the Keystone XL pipeline.

A kiteboarder’s alternative-energy plan.

Before the Bullitt Center, there was Capitol Hill's Bertschi School that received certification as a "Living Building" for its self-sustainability.

Seattle city leaders have revealed a plan to make Seattle carbon neutral by 2050. The plan doesn't have a price tag yet, but it does include goals to: extend bus and light-rail services, make Seattle more walking and biking friendly and decrease greenhouse gases from cars and trucks by 40 percent. 

Former REI chief executive Sally Jewell, a woman of energy, competitiveness and confidence both in the boardroom and on a mountain trail, faces her biggest challenge yet as leader of the Interior Department’s giant bureaucracy in “the other Washington.”

A pilot project to keep the park pesticide-free through hand-weeding went to seed last year. It died out after a neighborhood could no longer muster the volunteer momentum to keep it going.

A new research from the University of Washington found that depending on an online grocery delivery service cuts carbon dioaxide emissions by at least half when compared to individual car trips.

The world is going to need oil. We have a chance to achieve energy independence. And new technology eliminates most of the greenhouse gas concerns on tar sands oil. 

The federal government is hearing protests about the state's siding with Boeing on a key scientific assumption by the state about fish consumption levels and the health effects of water pollution.