Picture it: Mosquitoes that don't spread disease. Aphids and potato beetles that stay away from our crops. Biting insects that don't bite humans. There's an awful lot of good in a world where we can make those changes. There's just one catch...In order to do those things, we have to genetically modify those creatures, using cutting-edge technology that allows us to basically rewrite their code. The upside is tremendous, so the work is being done. But there are ethical questions as well as safety concerns: Are we messing with something we don't yet fully understand? What happens if it goes wrong? And ... ummm ... isn't this how the bad parts of sci-fi techno thrillers always begin?GUEST: Ben Matthews, University of British Columbia, co-author of a report submitted to the Pest Management Regulatory Agency