told the entire community would likely be underwater and gone in 50 years. >> "america tonight's" michael okwu joins us. now know michael we saw in your report what was happening at the shoreline. but it makes me wonder what's happening at the deep water all that additional oil did it dislofl dloofl dissolve into the waters of the gulf? >> you know joie, to evere the attempt to get all that oil 4.2 million barrels of oil that seeped into the gulf, there was an effort to get all that oil out into the gulf obviously. what we know is the cleanup effort skimmed a lot of that oil off the surface and also pulled a lot of it off the beaches. but just what happened to the rest of that oil was a mystery until very recently, we understand that researchers at florida state university and at the university of california at santa barbara say they have found it. that it actually seeped down onto the ocean floor and it's mixing up with some of the sediment there and they say it could be as much as 10 million gallons. >> holy cow! what does that mean? if scientists really have found the missing oil can they b

michael okwu, al jazeera point ocien bayou louisiana. >>> and michael told us, some 10 million gallons of oil simply sunk potentially entering the food chain. >> loving them to death? sea cows and what tourists are doing to them. and e-cigarette does it help smokers kick the habit or cause younger people to light up. >>> an in-depth look into locker rooms and coach's corners and the field of unfair play at aljazeera.com/americatonight. can being. >> in our fast forward segment being loved to death florida's manflorida'smanatees, many want to touch the gentle sea cow. but sheila macvicar says there's much to fear. too much of a good thing. >> king's bay is the only place you can swim with and even touch groups of florida's endangered manatees. producing an an aquatic gridlock. an ever growing number of people now more than 250,000 a year flock to this small bay. hot springs beneath the bay provide warm water all year round, heated to a pleasant 72°. manatees need that warmth to survive winter cold. it's critical manatee habitat. >> we have fat healthy manatees here. >> mike is a skilled

michael okwu, al jazeera, point ocien bay ou louisiana. >>> and michael told us, some 10 million gallons of oil simply sunk potentially entering the food chain. >> loving them to death? sea cows and what tourists are doing to them. and e-cigarette, does it help smokers kick the habit or cause younger people to light up. >>> an in-depth look into locker rooms and coach's corners and the field of unfair play at aljazeera.com/americatonight. >> monday. >> a lot of these mining sites are restricted. >> a silent killer. >> got a lot of arsenic in it. >> you know your water's bad and you know you're sick. >> unheard victims. >> 90 percent of the people will get some type of illness from the water. >> where could it happen next? >> i mean, they took away my life. >> "faultlines". al jazeera america's hard-hitting... >> today they will be arrested. >> ground-breaking... >> they're firing canisters of gas at us. >> emmy award-winning investigative series. water for coal. monday, 10:00 eastern. only on al jazeera america. >> part of al jazeera america's >> special month long evironmental focus fra

one of the last to get out an american who tells "america tonight's" michael okwu who says of the days he could never forget. >> the i had to beat the vietnamese out of the way so i could get into the chopper. it arced up and i could see on the edge of the city, 140,000 north vietnamese troops moving in with the lights on. >> reporter: the final moments before the fall of saigon. seared forever into the memory of frank snap, one of the last americans to leave vietnam. ♪ i'm dreaming of a white christmas ♪ >> bing cross crosby's holiday classic blared on the radio. it was secret code for code wind the biggest operation of its time. fearless pilots flew over 600 flights, air lifting more than 6,000 people out that day including 900 from the u.s. embassy alone. as word got out that the americans were leaving thousands of south vietnam vietnamese swarmed the gates many worked directly for the u.s. mission in vietnam and were considered high risk. >> during the last day we played god. we determined who would be saved and who wouldn't. and it was heart-rending. would you get one person from

"america tonight's" michael okwu begins the report, with a family that knows too well about living with awe autism. >> most four-year-old boys noah hinson likes playing and exploring the furniture. but when he was an infant -- >> by 12 months we were getting pretty worried. we were pretty sure we were going down that road. >> reporter: that road was autism. and kristin and hers husband neil an air force pilot had been down it before. their two older sons ten-year-old justin and seven-year-old simon are both autistic. >> you had a couple of children already who were autistic yet i have to imagine it was no less i don't know, a sad feeling. >> yes. >> to experience this. >> definitely. it was hard. it was hard. >> reporter: autism now affects 1 in 68 american children but for kids with an autistic sibling the risk goes up dramatically to one in five. that's according to research from the u.s. u.c. davis mind institute. two years ago, kristin brought her children here to enter into a study of high risk children. >> children in that constellation have a 50% chance of developing autism thems

"america tonight's" michael okwu saw a sea change for the crimson tide after an historical election for student government. >> we are in a new era for university of alabama, we are moving forward we are progressing and our entire campus structure is shifting now. and it is because of that that i was elected. >> reporter: last month junior elliot spillers, was elected student body president one of two african americans ever the last one 39 years ago. the machine is a coalition of all white fraternities and sororities who participate in and some say rig school elections. this reputed secret society dates back at least 100 years in the university, members meet in the basements often called going downstairs. >> it was a political machine. >> former alabama politician steve flowers was a machine member. >> we went downstairs together, we nominated made political deals together. >> after you were in om politics. >> we would say i have got a guy in my fraternity who wants to be president, we'll swap out we will let you have that job. we have a guy who wants to be president of the college of ed