What If Humans Didn’t Need Oxygen? #nasa #space #spacefacts

本站添加: 2026-05-05

Humans cannot survive without oxygen because our cells rely on aerobic respiration to produce energy, and without it, the brain shuts down within minutes; however, some organisms like Henneguya salminicola can survive without oxygen by using anaerobic metabolism, which produces energy through a completely different biological process, suggesting that life without oxygen is theoretically possible but would require fundamentally different biological systems.