This is cool for off-planet macronutrient production, but plants already do this at scale on earth with excellent efficiency and relatively little supervision.

This is cool for off-planet macronutrient production, but plants already do this at scale on earth with excellent efficiency and relatively little supervision. Marketing this as eco-friendly sounds, to me, like utterly shameless greenwashing. I can't picture something short of total ecological collapse or apocalyptic world-wide drought that could ever make it more efficient to feed large numbers of people this way. Notice that they compare Solein favorably to animal products, which are an order of magnitude less efficient than plant products; if you wanted to make substitute meats, you'd be comparing it head-to-head with soy and similar protein sources. Even their "meat substitute" and "cultured meat" are more processed than Solein; you'd need extra processing (i.e. energy input) to make Solein a comparable meat-substitute product. I'll also wager that their greenhouse gas emissions models assume some sort of renewable energy source; until we're at 100% renewable energy for industrial processes, Solein production would necessitate using non-renewables for the extra energy input it requires. If you want to switch to renewable energy, and Solein ends up using enough industrial energy to require new renewable power plants (which, at global scales, it absolutely would), you'll have to also factor in the energy, material, and greenhouse gas costs of those new plants. And given that biochemical pathways in plants have had hundreds of millions of years to perfect their efficiency, it's really, really hard for me to imagine any industrial process rivaling plant-based sequestration efficiencies. Also, I don't know about the nutritional or culinary properties of Solein, but they are starting at a tremendous disadvantage compared to natural plant-based foods that our bodies are already acclimated to. You'll need extra energy for the industrial processes creating flavors, vitamins, and other nutrients, as well as the processes required to make this glop palatable (see point above about the comparison to processed meat-substitutes). If you're worried about CO2 production from farms, you could switch to mostly plant-based diets with non-animal meat-substitutes. Plants literally build their own solar arrays (called "leaves"), so they don't compete with other industrial power uses for still-scant renewable energy. You could use renewables for the industrial processes associated with agriculture. Some stuff, like methane production in rice paddies, is a real greenhouse gas issue, but the general approach of using plants as an integrated solar-powered carbon sequestration and food generation solution is well established and constantly improving through GMOs and farming practices.