BOULDER, Colorado — Humming to himself, Charles Jones makes his way up a muddy hiking trail snaking through the Colorado foothills on an unseasonably warm winter day, his colleagues Dave Georgis and David Lohndorf following close behind.
BOULDER, Colorado — Humming to himself, Charles Jones makes his way up a muddy hiking trail snaking through the Colorado foothills on an unseasonably warm winter day, his colleagues Dave Georgis and David Lohndorf following close behind.