Leeches: Nature's Biodiversity Trackers

This week from the archives, all things wilderness survival. Mike and Ian take a trip to Denali National Park in Alaska to learn how to survive a bear attack. And when a listener asks how to quench thirst if they're stranded in the desert, another kind of Bear (Grylls) walks them through it. Plus, how to discover a new species with the help of some bloodsuckers.

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How To Do Everything is hosted by Mike Danforth and Ian Chillag. It is produced by Heena Srivastava. Technical direction from Lorna White.

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