Dr. John Pollard discovers that he can speed up human evolution with a shower of cosmic rays. Naturally, you wouldn't think that he'd be as daft as to try it out on himself first, but that's exactly what he does do and in short order he morphs...
He was afraid—not of the present or the future, but of the past. He was afraid of the thing tagged Reed Kieran, that stiff blind voiceless thing wheeling its slow orbit around the Moon, companion to dead worlds and silent...