Seattle inventor uses a natural resource to create portable energy.

As Washington state contemplates a means of cutting carbon emissions, it looks to its neighbors.

Using agricultural waste to turn algae into healthful food supplements could change what we eat.

Winners: Rice Fergus Miller, U.S. General Services Administration, Fred Hutchinson Cancer Research Center

Winner (Large): Coca-Cola Refreshments; Winner (Small): Chaco Canyon Organic Café

Winner: Pan Pacific Hotel; Silver: Columbia Hospitality

Winner: 3TIER; Silver: Scope 5

Winner: Car2Go; Silver: Keeney’s Office Supply and Office Interiors

Winner: GreenCupboards; Silver: T-Mobile USA