A study found that solar-energy-driven production of microbial foods from direct air capture substantially outperforms agricultural cultivation of staple crops in terms of land use. Growing such food from air yielded 10 times more protein and at least twice the calories than growing soybeans with the same amount of land.
A study complements life-cycle assessment studies, showing substantial deforestation reduction (56%) and climate change mitigation if only  of per-capita beef was replaced by microbial protein  by 2050.
Single cell protein (SCP) can substitute conventional protein feed. Land shortage and environmental calamities such as droughts or floods aren't a bottleneck in SCP production.