The Dead Sea, shared by Israel and Jordan, is the lowest spot on Earth. Its shoreline is about 400 meters below sea level. As the world’s saltiest large body of water, averaging a salt content 6 times higher than that of any ocean, the Dead Sea supports no life. With no outlet, the water that flows into the Dead Sea evaporates in the hot, arid air, leaving the minerals. The Jordan River is the chief source of the incoming water, but since the 1960s much of its water has been diverted for irrigation. Its length has already shrunk by more than a third, and, while the sea will never entirely disappear due to evaporation slowing down as surface area decreases and saltiness increases, the Dead Sea as we know it could become a thing of the past.