Shimmering on a continent’s roof in the harsh sunlight of 11,400-feet altitude, Bolivia’s Lake Titicaca is both Earth’s highest big lake and South America’s largest.

The roots of the Triangle Universities Nuclear Laboratory, the Duke-based facility that trained Los Alamos Nuclear Lab director John Browne Ph.D. '69, can be traced back to the first controlled nuclear chain reaction, which took place at the University of Chicago's Stagg Field.