Colorado hikers, one blind and one in a wheelchair, use their strengths to help each other climb mountains

Trevor Hahn has been legally blind since he was born. He suffers from macular degeneration, iritis and glaucoma. “Ten years ago, I could drive a car. Five years ago, it went downhill and I could only see light after that,” Hahn said. “I can only see light now. No shapes, really.” He learned how to hike using adaptive techniques like following the sound of bells or with...

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