The Mariana Trench has long captured the public's imagination. Here are some facts about one of the Earth's great wonders. Q. What is the Mariana Trench? The trench is the deepest place on Earth, ...

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A Chinese submersible has discovered thousands of worms and mollusks nearly 10 kilometers (six miles) below sea level in the Mariana Trench, the deepest colony of creatures ever observed, a study ...

How do fish survive in the extreme conditions of the deep sea—amid icy cold, darkness, and immense water pressure? A genomic study provides surprising answers: A single mutated gene might have ...