Remember the freakish animal-human hybrids in The Island of Dr. Moreau? The science fiction fantasy might return, approaching science fact. In August, the National Institutes of Health (NIH) proposed lifting a funding ban on research that uses human stem cells to create animal embryos. The move would free U.S. scientists to create, under carefully monitored conditions, the genetic equivalent of an animal-human hybrid. These “chimeras,” named for a beast in ancient Greek mythology,…