Several months ago, scientist Chad Greene was flying aboard a Gulfstream III with engineers in an effort to monitor a radar instrument on the Greenland Ice Sheet. Flying over northern Greenland, ...
NASA scientists have made a surprising discovery beneath Greenland's thick ice sheet: an abandoned Cold War-era military base ...
There are 13 countries that sit on Earth's equator. Can you get them all in 5 minutes? If so, how fast can you do it?
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