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Have you ever thought about the huge amount of metal swirling above our heads? Should. Because sooner or later all that material orbiting in space can fall to Earth, like an asteroid shower. Or the migration of clouds towards the poles and leaving us at the mercy of ultraviolet radiation? Or to ailanthus, a shrub of Asian origin that spread menacingly across the planet “like one gigantic plant organism”, imposing itself on the rest of the vegetation and threatening its extinction?
