https://www.cnet.com/news/lab-grown-cultured-clean-meat-tasting-the-chicken-of-the-future-just-inc/

Cultured meat, also called lab-grown or clean meat, starts with the collection of cells, usually done through a biopsy so the animals aren't harmed. Just says it has also been able to get cells from a chicken feather. The most viable cells are chosen and then given the right nutrients they need to grow in a bioreactor. In the case of this chicken nugget, those nutrients are plant-based.

Not only does cultured meat avoid sacrificing animals, it could take fewer resources to produce than traditional livestock. Around 14.5 of the world's greenhouse gas emissions are from livestock, according to a report from the Food and Agriculture Organization of the United Nations. But one study questions how environmentally friendly clean meat products could be if the process is energy intensive.