Gene editing could upend the future of factory farming — for better or worse

“Each year at America’s egg hatcheries, as many as 300 million male chicks are gruesomely killed — usually by being ground up alive or gassed — since they can’t lay eggs and have been bred to be too small to be worth the effort of raising for meat. Researchers around the world are using transgenic engineering and gene-editing tools in an attempt to solve this chicken and egg dilemma.”