Deep-sea fish adapt to some of the most extreme conditions on Earth. New research analyzing their evolution finds the same ...

Narrator: The Mariana Trench is the deepest point on Earth ... Narrator: But if you put out some food, some of the planet's strangest creatures would emerge from the darkness.

In yet more evidence of how plastics have worked their way into the environment and even the food chain ... microplastics near the bottom of the Mariana Trench, the deepest place in the world ...