Trump says we're going to Mars. He may be making it harder to get there.
Trump says we're going to Mars. He may be making it harder to get there. President Donald Trump says we’re going to Mars, but ...
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Mariana Trench quiz: How deep is your knowledge?
The Mariana Trench (sometimes called Marianas Trench) is a mysterious and extremely deep oceanic trench. Plunging deeper than Mount Everest is tall and stretching five times longer than the Grand ...