RACHEL MARTIN, HOST:
Good morning. I'm Rachel Martin. Climate change is lowering water levels around the world and revealing some surprising archaeological treasures. When a reservoir in central Spain dropped to just 28% of its capacity, a giant stone circle from about 5000 B.C. emerged. What's being called the Spanish Stonehenge disappeared in a flood in the 1960s, resurfacing just a few times since then. Archaeologists are now rushing in to get a look before it vanishes again. It's MORNING EDITION. Transcript provided by NPR, Copyright NPR.