The US Food and Drug Administration has approved CRISPR gene-edited pigs for human consumption. As MIT Technology Review reports, only an extremely limited list of gene-modified animals are cleared by regulators to be eaten in the United States, including a transgenic salmon that has an extra gene to grow faster, and heat-tolerant beef cattle. British company Genus used the popular gene-editing technique CRISPR to make pigs immune to a virus that causes an illness called porcine reproductive and respiratory syndrome (PRRS). The virus can easily spread in factory farms in the US and can cause the inability to conceive, an [...]