 And that's a really potent planet warming gas. There's also concerns around deforestation to graze the cattle, but also to grow the crops that they eat. And those crops are also sprayed often with nitrogen fertilizers, which lead to nitrogen oxide emissions, another potent greenhouse gas. So the issue of animal agriculture is really a big one in terms of the fight against climate change. But there are also lots of alternatives. We're talking about lab-grown meat today, but there are plenty of plant proteins. Tofu?