Ancient Flood Left Its Mark in the Mediterranean Sea

One of the largest floods in Earth's history may have deluged the Mediterranean Sea more than 5.3 million years ago, leaving behind a mass of debris roughly the size of Greece's largest island, Crete, researchers say.Scientists investigated a roughly 640,000-year span of time starting nearly 6 million years ago when the Mediterranean became a hyper-salty lake. This so-called Messinian salinity crisis "was the most abrupt environmental change, at a planetary scale, since the end of the Cr