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The detection dogs tracking poachers and Covid-19
Marlo the labrador is learning how to sniff out Covid-19 in the UK. In Tanzania, Polish hound Thor is on the track of wildlife poachers. We explore how their extraordinary noses are tackling these issues and more around the globe.
Produced and presented by Claire Bates
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People Fixing the World
Brilliant solutions to the world鈥檚 problems
