http://www.pakalertpress.com/2013/12/25/from-costa-ricas-great-balls-to-death-valleys-wandering-rocks-the-10-bizarre-phenomena-that-still-have-scientists-baffled/
The Historyscoper's Science & Technology News Blog. Daily links to the most eclectic hand-picked news for the elite minority of supergeneralists, plus occasional off-the-wall links.
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