Humans have been tinkering with the genetic makeup of animals for centuries.
We've bred dogs that herd, hairless cats and countless exotic teacup species that fit snugly in our laps. In the 21st century, such breeding is moving from bucolic farms to a "frozen zoo," where scientists are using genetic engineering to redesign animal life as we know it.
Journalist Emily Anthes explores this rapidly advancing technology in her book Frankenstein's Cat: Cuddling Up to Biotech's Brave New Beasts. She examines how science is shaping the future of our furry and feathered friends.
Anthes and Prime Time Radio host Mike Cuthbert discuss what could happen if the limits of animal alteration are stretched to, say, cure diseases, or clone Fido and create cats that glow green.
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