By Jennifer Napier-Pearce
http://stream.publicbroadcasting.net/production/mp3/kuer/local-kuer-921177.mp3
Salt Lake City, UT – Scientists have long held that present-day humans are essentially the same as our ancestors 50-thousand years ago. But a University of Utah anthropologist argues that humans evolve much more rapidly than previously thought. KUER's Jennifer Napier-Pearce reports.