Extreme drought gripped the world this year, fueling wildfires, draining rivers, reducing harvests. Amid the climate hardships are artifacts of thousands of years of lost history once buried or flooded, now reappearing due to plummeting water levels. From a sunken WWII-era landing craft in Nevada to an abandoned village in Iraq to a medieval horse bridge in England and undersea prehistoric stone monuments in Spain, here are sites that silently witnessed and documented historic climate change. D-Day Debris Lake Mead, Nevada The fast-receding waters of Lake Mead exposed a sunken World War II-era vessel—a Higgins boat used for beach landings....