Mariana Trench

When retired naval officer Victor Vescovo made a record-breaking 10,928 m submarine dive to the bottom of the Pacific Ocean’s Mariana Trench, he probably wasn’t expecting to come across man-made litter...but he did. Just a few days after the United Nations has issued a damning report of the state of our planet, we take a look at other unlikely places where we’ve managed to leave a damaging trace.