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Bear Grylls stays (disgustingly) hydrated

How To Do Everything

CHAPTER

Leeches: Nature's Biodiversity Trackers

This chapter unveils an innovative method for tracking biodiversity using leeches, whose retained DNA from animal blood can identify local species. Through personal anecdotes and humor, the speaker explores the challenges and ethical dilemmas of utilizing these creatures in research while uncovering previously undocumented species and their ecological significance.

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