Heroes come in all shapes, sizes, and species Growing up in Cambodia, Malen knew that dangers from a long-ago war lay hidden underground. Buried explosives forced her and many others to live, farm, and play in fear. As she got older, Malen learned how to use a metal detector to find and safely dispose of these landmines. Five thousand miles away, in Tanzania, Magawa was also learning how to find landmines. But he...