Stone-Eating Lichens Are Gradually Gobbling Up Ancient Persepolis



The ruins of the ancient Persian capital, built in the 6th century BCE, are an important locus of Iranian national pride and a major tourist attraction. Now lichens, algae-fungus hybrids, infest the stone monuments, dissolving minerals and penetrating surfaces by 1.5 cm, slowly breaking the ruins down. – AFP (MSN)



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