Charles is an African giant pouched rat, a species endemic to sub-Saharan Africa. He's also a pioneer, one of 30 of his species that live and work here in Morogoro, a few hundred kilometers west of Tanzania's largest city, Dar es Salaam, on a program to sniff out tuberculosis (TB).
Recently, in an article in the New Republic, 'The Animals That Can Save Your Life', journalist Emma Young introduces readers to the emerging science of training animals to detect things humans cannot.