Why Humans Can't Regrow Limbs

Why Humans Can't Regrow Limbs. Salamanders and starfish casually regrow full limbs while humans form scars; the exact biological switch that was lost in us remains unidentified despite decades of research.2024-2025 breakthroughs in genetic triggers for regeneration and stem-cell trials have put functional limb regrowth in mammals within reach, making the unsolved human gap suddenly newswort…