so that wcan assess what these impacts are ing to be different parts of the world and start taking measus inevitable. narrator: for cities around the world where more than 50 percent of us currently live, these are criticalimes. while we wait for the scientists to act, is there anything we can do to protect ourselves from the march of nature and its trail of disease? in part two, the fight back begins. [engine revving] narrator: jakarta is up in smoke. the capitol of indonesia is fighting back against the march of a disease which is becoming more and more deadly. dengue fever used to occur during jakarta's wet season, but the seasons are changing and so is dengue. now it is claiming vehicles all year round. housewife yaya fadlia prides herself on keeping her home clean and disease free. dengue has already claimed victims in her community, but she's determined to stop her children getting it. there's no vaccine to protect them, but she will do whatever it takes to keep her family safe. even this. meet the jumantics, a neighborhood gang of sorts. yaya is a founder member. the jumantics are

we wanted to measu how much rain would cause flooding. we're in the middle part of the street and we're looking about one inch. rain is not coming down that hard. in le than ten minutes the water has already risen a little more than an inch half covering >> it's not only inconvenient, it's worrisome this is what's hap happening with the city. >> reporter: they say the problem is drainage or the lack of it. >> every time i i pour, even if it's only for an hour or two. i'm not sure what's going on. after one hour of rain, it's always a flood. >> reporter: miami beach is no stranger. between 17th and 18th, pretty flooded there. pedestrian and drivers trying to get around. that water recede much more quickly than out here. >> now to that breaking news out of homestead where detectives caused man to open fire inside a neighborhood clubhouse.e. stephanie is joining us live. it's still a very active scene there, right? >> reporter: investigators are we were able to drive down there and get video of what investigators re focused on. one man is se

. >>> -- danish mp's are debating measu measures to deter people from going to denmark. >> reporter:s for refugees in copenhagen are getting harder. there is another new law meaning refugees already here will have to wait three years before their families can join them. for people like this woman from syria, that matters more than losing the rings from her fingers. i don't want to lose my things, but if it means my family is safe i will pay anything. >> reporter: denmark has a breakdown of cooperation inside the european union means the government here joining countries like poland and hungary innen acting provocative laws. the powerful dane initial people's party says the laws aren't enough. they would like to go after refugees bank accounts as well. >> the message is quite clear. if you want to come to europe, you should stay clear of denmark, because we are defining the rules, and if we have the opportunity to send you back, we will. >> reporter: a good half of danish society is horrified by all of this. where is the denmark that helped this yous in world war ii. what has happened

he's having lawmakers to approve measu money to help the crisis. he says he'll release his e-mails for accountability. >> these protesters gathered tuesday calling for the resignation of the governor. some want him arrested. snyder says he's not going anywhere. >> to you, the people of flint, i say i'm sorry and i will fix it. no citizen of this great state should endure this kind of catastrophe. government failed you. federal, state and local leaders by breaking the trust you place in it. i'm sorry most of all that i let you down. you deserve better. you deserve accountability. you deserve to know that the buck stops here with me. >> and a new report from the environmental protection agency puts the plam for the crisis on state and local officials. and a growing number of residents are joining lawsuits over the contamination. >> we report on how the crisis began and what officials have and have not done about it. >> reporter: it is something many take for granted. fresh, clean water from tap in your home. for the nearly 100,000 residents of flint,

in the past republicans have repeat ledly rejected the measu. >> if we can get a bill through take takes fire arms away from the person freight torpetratopt for two years, that will go a long way. >>> i'm a maniac. an everybody on this stage is stupid, fat and ugly. and ben, you're a terrible surgeon. now that we've gotten the donald trump portion out of the way -- >> everyone without the frontrunner, another lively gop debate as we count down to the iowa caucuses. the consensus this morning, senator ted cruz has little new traction despite his attempts to establish himself on a donald trump free stage. analysts use the word muddled to describe the final debate about that chuck todd said immigration tied some gcandidates in knots. >> we both made the identical promises. but when we came to washington, we made a different choice. marco matt choice to go the direction of the major donors to support amnesty because he thought it was politically advantage just. >> throughout this campaign, you've been willing to say or do anything in order to get votes. >> in terms of speaking times, jeb bus

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on the stump, clinton has blasted sanders for what she says is his opposition to strong gun safety measus. last night, he responded. >> well, i think secretary clinton knows what she says is very disingenuous. i have a d minus voting record from the nra. >> i have made it clear, based on senator sanders' own record that he has voted with the nra with the gun lobby numerous times. >> another powerful exchange was over health care. clinton accusing sanders of wanting to undo obamacare. >> we finally have a path to universal health care. we've accomplished so much already. i do not want to see the republicans repeal it and i don't want to see us start over again with a contentious debate. >> no one is tearing this up. we're going to go forward but what the secretary neglected to mention, not just the 29 million still have no health insurance that even more are understand insured with huge co-payments and deductibles. >> just hours before the debate, sanders surprisingly unveiled his own health care and tax plan. price tag. but he downplayed that during the debate. sanders was also asked abou