Along the railways, from bananas and vegetables boxes, exotic insects like various kind of beetle, seedlings or tropical seeds, more rarely spiders, reptiles and other subjects… continually fall down. They are the so-called “invasive alien species” that would have contributed almost 40% of all extinctions in the world. In Roma we’re having for years “alien” parrots, squirrels, snakes, mosquitoes and the terrible red palm weevil…