Two decades ago, a rare but deadly fungal infection began killing animals and people in the U.S. and Canada. To this day, no one has figured out how it arrived there in the first place. Now a pair of scientists have put forth their own theory: Tsunamis, sparked by a massive earthquake in 1964, soaked the forests of the Pacific Northwest with water containing the fungus. Read more about this fascinating mystery over the years and if this pair of scientists have really found the answer!

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