A radiation-eating fungus, Cladosporium sphaerospermum, thrives inside the Chernobyl reactor. Scientists theorize its melanin pigment may perform "radiosynthesis," harnessing deadly ionizing radiation for energy like plants use sunlight. While not yet proven, the fungus demonstrably grows better in radiation and may even act as a radiation shield, a stunning adaptation to a man-made disaster.
https://www.sciencealert.com/chernobyl-fungus-appears-to-have-evolved-an-incredible-ability
