Students compete to find clean-tech solutions to environmental problems By Ben Raker, Alaska Airlines Magazine, and Halley Knigge, Alaska Airlines A window that harnesses solar energy and sends electricity down its edge to feed the power grid; a hair dye with gold particles that limits the need for reapplications and reduces the chemicals sent down drains; road barriers that use old tires otherwise destined to… 1 min read April 3, 2015 Keep up with Alaska