The future of beef might be a sausage fest

In April, a little black calf with dabs of white on his back hooves was born. It was the first time Joey Owen, a postdoctoral researcher at the University of California, Davis, had ever seen a cow give birth, and he watched in wonder as the calf, Cosmo, stood up and took its first steps on wobbly legs. Owen had spent the better part of five years working toward this moment, refining the process of gene editing as he collected eggs, fertilized them to create zygotes, and injected genome editing reagents into these one-cell embryos. One of those zygotes became Cosmo.