In the late 1940s, a U.S. Army Air Forces B-29 Superfortress crashed into Lake Mead during a classified postwar operation known as “Sun Tracker.” The mission was part of early Cold War research ...

If you want to know how bad the drought has been in the American West, there are so many powerful symbols, like Lake Mead, a huge reservoir outside Las Vegas. Water levels there have plummeted, and ...