Pollution has worked its way down to the world’s deepest waters

Tiny, shrimp-like amphipods living in the Mariana Trench were contaminated at levels similar to those found in crabs living in waters fed by one of China’s most polluted rivers. (Photo by Dr. Alan Jamieson/Newcastle University)
The Mariana Trench in the northern Pacific is the deepest part of the world’s oceans. You might think a place that remote would be untouched by human activity.
But the Mariana Trench is polluted.
At its deepest — about 7 miles down — the water in t