Zoltan Takacs has been chasing venomous snakes in the world's most remote locations since he was a teenager. He's traveled to 133 countries and survived seven snakebites. But as a herpetologist and toxinologist, Takacs doesn't go after these deadly creatures just for the thrill; he collects venom and brings it back to a lab, where he and his colleagues analyze it with the goal of treating diseases. "Animal toxins evolved to be perfect killers, but they can also be lifesaving drugs," he says.
Nat Geo Explorer: Zoltan Takacs