Similar to released balloons, sky lanterns all return to earth as litter. They are often marketed as “biodegradable” or “earth- friendly,” both untrue. Sky lanterns are made with treated paper, wires and/or a bamboo ring. They can travel for miles and always land as dangerous litter. Sky lanterns have caused huge structure fires and wildfires. This flaming aerial trash has caused serious burns to humans and killed animals who eat them or become entangled in their fallen remains. Read more here.