WATCH | Colin Clark is great at making frogs have sex with each other.
A global crisis
From a private breeding facility located in the basement of a mansion in the Bronx, Colin Clark is on the front lines of the fight against mass frog extinction.
Frogs are facing a global crisis. Climate change, habitat destruction, pollution and infectious diseases have caused one-third of all frog species to be threatened with extinction.
Private frog breeders like Clark are focusing their efforts on endangered species, in order to re-introduce them into the wild if they go extinct.
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