Regular readers know the drill by now: Every other Friday we post a snippet of one of the many strange and fascinating bits of earth science that pass through our inboxes here at What On Earth, and then you all have a week to show off your science savvy by hazarding a guess (or two or three, if you’d like) in the comments. The last clue was an easy one, but we’re predicting this one–our first sound–will stump most of you. Listen up, and prove us wrong…
Remember, the answer usually has something to do with….
a) Earth Science
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