So far cultured meat has been burgers; next challenge is animal-free steaks

The meat you eat, if you’re a carnivore, comes from animal muscles. But animals are composed of a lot more than just muscle. They have organs and bones that most Americans do not consume. They require food, water, space and social connections. They produce waste.

Farmers spend a lot of energy and resources to grow complex organisms, creating waste in the process, only to focus on the profitable cuts of meat they can harvest.

It would be easier, more humane, less wasteful, to produce just the parts people want. And with cell biology and tissue engineering, it is possible