Options for a Colorado Avenue Dam overhaul include a white-water play area and a safe floating route.
Contaminants in the Portland Harbor Superfund site put people and the environment at risk.
The Northwest's first plastic-bottle recycling plant will begin operating in Oregon in 2010.
A new study shows warming temperatures could increase forest growth in the Northwest.
A legislative task force will make a third try at coming up with a plan for cutting emissions.