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The biggest unsolved mysteries

Espresso Logo By Daniel Bettridge of Espresso | Slide 1 of 21: We’ve planted flags in both poles, discovered the building blocks of life, and even set foot on the moon. But despite our technological and scientific achievements, human history is still littered with countless unexplainable events. 
Indeed, there are a myriad of mysteries that remain unsolved to this day. From strange disappearances to hidden monsters, join us as we look at 20 unsolved mysteries that will give you goosebumps.

The biggest unsolved mysteries

We’ve planted flags in both poles, discovered the building blocks of life, and even set foot on the moon. But despite our technological and scientific achievements, human history is still littered with countless unexplainable events.

Indeed, there are a myriad of mysteries that remain unsolved to this day. From strange disappearances to hidden monsters, join us as we look at 20 unsolved mysteries that will give you goosebumps.

© AP Photo/San Francisco Chronicle

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