Mammals Can Regrow Limbs. We Breathe Too Much.

Hinzugefügt: 2026-05-15

[00:00:00]Mammals.

[00:00:01]We have the DNA to regrow a lost limb.

[00:00:04]We just breathe too much. At Switzerland's EPFL, a team compared frog tadpoles to embryonic mice. Same wound, same age, same regeneration code. One difference, oxygen. When a mammal's wound [music] hits open air, the HIF1A protein triggers a kill switch, instantly pausing the regrowth process.

[00:00:25]Lower the oxygen in that mammal tissue and the dormant code boots back up.

[00:00:31]Regeneration isn't a lost amphibian superpower. It's a default [music] human setting locked away by the very air keeping us alive.

[00:00:41]SOMETHING TO CONSIDER. OOH.

[00:00:43]>> [music]