Public Radio International: Lakes high in the world's mountains are becoming increasingly dangerous to the towns that have sprouted up near them. The lakes are prone to floods, typically caused when the mountain glaciers that feed them shed a chunk of ice and rock, forcing thousands of gallons over the banks.
The hamlet of Carhuaz, in Peru's Cordillera Blanca Range, could hardly be more picturesque.
Birds chirp while venders hawk their goods at an open-air market in the town tucked into a fold at the furrowed base of...