"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 kilometres west of Tanzania's largest city, Dar es Salaam, on a programme to sniff out tuberculosis (TB)."
Rats can smell tuberculosis. Dogs can smell cancer. Now they're being trained to save your life. Emma Young reports.
Written by Emma Young, read by Kirsten Irving, produced by Jen Whyntie.
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