Humans have been dumping thousands of tons of space junk in orbit around the Earth since the 1960s....nobody cared much until it started getting busy up there...hitting the hundreds of nice new shiny satellites or spaceships in orbit...the answer seems to be to use private companies to send up satellites and push all the garbage back at the Earth...so it all burns up on re-entry...aside from the extra damage this pollution this will do in our atmosphere...what happens if several DON'T burn up?...possibly radioactive molten metal raining down on us....nice!