and we go to hurricane-struck haiti. a country whose very fate could be decided by climate change. it has been nearly a year since the signing of the historic paris agreement.

and we go to hurricane-struck haiti. a country whose very fate could be decided by climate change. it has been nearly a year since the signing of the historic paris agreement. for the first time ever, leaders of all countries were united in their battle against global warming, resolutely determined to save our planet. but now the agreement needs to be implemented - and fast. climate change marches on. rising temperatures and extreme weather conditions are causing flooding and droughts. one study estimates that global warming could cause losses of over 2 trillion euros' worth of property worldwide. the caribbean is particularly hard-hit. there, tropical storms are doing increasing amounts of damage. in haiti, the results are nothing short of catastrophic. >> hurricane matthew raged here for 12 long hours. when it finally moved on, it left southwestern haiti in ruins. many houses that survived the storm itself were carried away by floods or mudslides caused by the torrential rains that fell in matthew's wake. the town of port salut once had a pretty beach with a small promenade. one

and we go to hurricane-struck haiti. a country whose very fate could be decided by climate change.

haiti. but hurricane matthew struck a few days later, plunging the country back into crisis.officials continued detaining and deporting new haitian arrivals. but recent overcrowding in detention centers have led officials to allow some haitian migrants to enter the u.s. among the haitians who managed to cross into the u.s. before the policy changes is sandra alexandre, whose baby was born hours after she crossed the border. the baby's father, volcy, missed the birth and still hasn't met his daughter. he was supposed to cross a few days after sandra, right when the policy shifted. when he crossed, he was placed in an immigration detention center. he still hasn't been released. >> ( translated ): it's very difficult for me and for the baby. i don't know when he's going to comeere. >> reporter: alexandre says she wishes she'd known the policy was going to change before making the dangerous trek through latin america with her fiancÉ, while she was nine months pregnant. many times she almost gave up. >> i was like, "it's too difficult, i won't make it," but volcy said, "yes, you c