reminder o what happenehere when the depraved horizo exploded, it claimed -- whethe dewate horiz expded, it claime 11 lives. it became compulsive vewin the tubleack to thewetlds whertheil fst came ashore. is is ofthe ast of gra isld, louisiana, one ofhe worst affted eas. t looks to have made a dent cove. the bird cony is thriving. the hav been dolphins all aroundhe boat. but i is wh lies below the surface tt worries sentis. >> some ofhe oil isone. somef iis still in the deepwater throughout mh of this ecosystem, ctain on partof the bottom,nd certainl toward thehorene, escial in some o these ally vulnerable wetland >> thesere sef louisiana's mo important brding grounds. the islandas lush with a ground -- withangre, much of whh has died off. >> this i an iorta area for birds. you can see the main grou tha are holding this island tether arkind of deteriorating. it looks worse ts yearhan last yr. la year, it was litt more robust. >> on t coast of alabam shrimping seon is und way. there is uertainty aout e futu. compensation has bn slow. almost $4 billionf e $20 billion set aside the pay - b

the cars were queug to enr the heavily fortified gen ze when the expded during rush ur. the talibanas cimed responsibility for attackn te dense nistry building in cobble wch kill two people aninjured seven. ey swed a defse mistry passefor openg fe. in aove that rattle te maet, theinternational credit rating agcy, standard and poor, has downgraded arica's credit outt fr stable to negative. there were u.s. lawmaks wi not be able to agr way to in in the budg defit. in nigia, nal figures released sw thincumbent leader, goodluck jonathan, has live up to his first nameand won decively the ballot w celebrated for its rativcalm but the main opposition lder hasrejeed the results and volent demotratns have brokenut in the nor of the country. we ve this ory from nigeria. >> writing an burning in nohern nigeria agang of young people took tthe streets. house wi baers supporting thpresidentav been atcked and all because othe election rests inigeria. > gdluck jonathanaving ceifiethe requirements of the law hascore the highest number of vos ands heby declaredhe winner and his return ele

imaginati expded to a time where weerelloingo have warp drives d beliving in the stars.ry dsappnted wh i tk to peopland realize that that i probably t achievable. but i think wt itoeshen youonsir that the universe is not imane -- maneable oporons,hat g, andet, 're still living in it. >> o visions are mh more rcumribed. we do nothink about that. we have much more limit expectations of whate can do in space. s tt chang us? >> as a child, ante a star trek light. it ew older and lened about thunivse, to traveo the next-or nghbor star woul take 76,000 yrs durin current using curre techlogy so the universe isncrebly large. t i still thinkhat there are thgs wcan do. pele talk aut wormholes, bending ace d time. i am hopinghat bright spark t the will come up with a new ccept so we can tvel with an amazing dtanc. they' all b too far ay. >>s there anythg in science that has taken the pce of space exploration, something ateally fires our minds, gives u a difrentense of ourselves and our relationships to oururroundings? >> missouri very interest in an aa called synthetic biology. it