>> it's like fine tuning unnatural selection, right? the law of unintentioned consequences. it is relatively easy to stay on top of destructive vermin on an uninhabited island like this one, but what about an island with people, like floreana? that is the island where countless rodents have driven a little mockingbird to the brink along with the giant tortoise. karl campbell obviously can't use his goat snipers against rats, but park officials want him to use those helicopters to essentially bomb the entire island with poison. how do you make sure you don't poison the pigs and the cows and farmers and tourists? >> the measures that need to be taken are simply to remove the