Cattle

Hornless cattle were once the poster animals for a gene-editing revolution, until the FDA found a pesky mistake in their DNA. In this episode, we go to a California research farm to explore unintended consequences. Clarification: The FDA has an established process for researchers to request authorization to put animals with investigational genomic alterations, including those made with CRISPR, into the food supply. But the FDA does not issue orders to incinerate those animals. The catt...