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City. >> earl is working on a book about the climate plight. he lives part-time on the island researching life here where residents say they refuse to be climate change refugees. >> if you make the decision that whether or not you save a place is simply a function of head ko count, then they don't have a chance. you can't make it cost effective. that's a dangerous slope to start sliding down if that's your chief decider. because then you find yourself having to come up with what number is the baseline. i think it will be a real shame to see us get to that point. >> for now the mood is optimist...

Climate plight. >> if you make the decision that whether or not you save a place is simply a function of head count, then it doesn't have a chance. you can't make it cost-effective. that's a dangerous slope to slide down if that's your chief decider, because then you find yourself having to come up with what number is the baseline. i think it'll be a real shame for us to get to that point. >> reporter: for now, the mood on tan geea opt mitsic. and hoping his view on climate change won't change their future. if you could say anything to him today, what would it be? >> he's talking about a wall,...

Effective. you know, that's a dangerous slope to start sliding down if that's your chief decider is because then you find yourself having to -- to come up with what number is the baseline. i think it would be a real shame to see us get to that point. >> reporter: for now the mood on tangier is optimistic with some welcoming the new president. >> i like trump as much as any family i've got. >> reporter: and hoping his view on climate change won't prevent funding for their future. if you could say anything to him or his administration today, what would it be? >> i would say build us a wall. >> b...