BRING YOUR BIKE and learn how to change your flat tire. This is a great clinic for a refresher or for the first-time cyclist.
Portland Tribune: Chevy drives more energy efficiency projects at PSU via carbon credits »
Environmental Leader: Chevy to buy Portland State carbon credits »
Portland Tribune: Islanders find refuge but no paradise »
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Clean Tech Challenge semifinalists Andrew and Jonathan Thorsvik have developed a battery technology that could replace inefficient and toxic lead-aci
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