i'm bill weir for "nightline" in brazil. >> oh, yeah. a real dream assignment, bill. and flood luck to ed on his remarkable adventure. we'll be right back. but first, jimmy kimmel with what's coming up next. >> jimmy: tonight, teri hatcher, music from massive attack, and "lost" produce

bill weir ventured along with him on this dangerous journey. >> i'm worse. ow. ow. ow!porter: it is hands-down the worst place to take a long walk. but for ed stafford, that was the perfect reason to come. >> it was in fact a lot of people telling me that it was impossible to walk the entire length of the amazon that spurred me on even more. as soon as they said that's impossible, it made me want to prove them wrong. >> reporter: he set aside an entire year to hike and hack his way down the amazon. >> ed stafford, i presume? >> reporter: when i find him in eastern brazil, he's been walking more than two years and is still months away from the finish line. ed has agreed to drag my city-softened hide along for a couple of days to get a sense of the grind. so they've got what, blood-sucking gnats, cyanide squirting millipedes? the poison frogs? >> quite the mosquitos here, yeah. >> and of course the yellow fever, elephantitis-carrying mosquitos. >> yes. >> i can tell this is good bug spray because my lips are numb. ed is a product of posh london boarding schools, british m

now, it's bill weir's turn. >> thank you, friends.ouldn't pass up an opportunity to say "good morning america" from the depth of the amazon jungle. few things have captured me than the long line of explorers, with little more than a compass and a machete. you would think by 2010, everything has been discovered. but no one has ever walked the amazon, from the source to the sea. until now. and you're about to meet the man who is going to do it. it should be easy to wax poetic about the strongest and longest river o in the world. how it start with a trickle in the andes, getting fatter. and i should go on how that water creates earth's biggest jungle, teeming with an array of life. but being on the amazon, you fixate on all of the ways this gorgeous place can kill you. the mosquitos carry diseases. the drug smugglers, guns. the tribes, poisoned arrows and deep-seeded suspicion. it is one of the worst places to take a long walk. but for ed stafford, it was the perfect place to come the. >> a lot of people telling me it wasn't impossible.

bill weir has the story. >> reporter: with every machete whack, every soggy step, ed stafford gets closere ed has google earth. but even in 2010, the amazon is still a steaming, stinging -- >> ow. >> reporter: slithering test of will. >> it's great fun for two days. for two years, it's ridiculous. >> reporter: that's right. two years. he thought it would onto take one. back in those giddy days at the rier's source. >> everybody is waving enthusiastically, saying adios los locos. good-bye stupid people. >> reporter: a friendly peruvian offered to join him, and never left. together, they have survived foot rot and dysentery, cocaine smugglers and hostile tribes. >> half of them are bows and arrows drawn, half of them with shotguns and all the women had ma sheet deeps and they were absolutely livid. they were furious. >> reporter: since danger brings adrenaline, it is the clothes that never dry, mos key taupes that never quit -- >> ow, ow! >> reporter: the jungle that never quiets. right over there -- that's where the jaguars live. >> as much as i wanted at times to be at home i've never act

as you may have noticed, the man to my left is not bill weir. so, bill is away on assignment. we're happy to have dan harris here. >> thank you. good morning. it is saturday, may 22nd. we're starting to get in some new pictures from india, where that plane went down as morning. as many as 160 people were killed. but are at least eight survivors. that plane, bianna, was trying to land on a very tricky hilltop airport and overshot the runway. >> it's in a remote location. it was difficult for rescue workers to get there. we're going to get to that story in just a minute. >>> also this morning, this is a live feed video of the oil leak at the bottom of the gulf. bp has been using a dispersant to break up the oil that they say has been successful. but the epa says it's toxic and could seriously harm marine life. right now, they're using it. we're going to talk exclusively to the ceo of the company that makes the chemical to get answers about how safe it is. >>> we're going to start with the plane crash in india. jim sciutto has been following developments from our london bureau. g

bill weir is on assignment. thanks for joining us today. >> you're welcome. after watching "lost" for six years, if they don't have answers tonight, i'm going to be very disappointed. >> i think i'm the one person in the world who doesn't watch it. >>> we have questions out of india this morning. 158 people died in a plane crash. a few people did survive. how did that happen? did where they were sitting on the plane save their lives? >> that is an interesting point. >>> and the three american moms who had an emotional reunion with their children are back in the u.s. but without their kids. we'll talk to the brother of one of the imprisoned hikers and find out hoch progress is being made in getting them released. >>> and i love this investigation we decided to you launch. you know the door close buttons in elevators and the crosswalk buttons you press, do they actually work? are they hooked up to anything? becky worley digs deep for answers. >>> but we're going start this morning along the gulf coast. we're seeing in images that we were dreading. beautiful bea

you have you and bill weir to live the dream. want to thank harrah's again?ll the pros. had a terrific time. the world series of poker returns to espn on july 27th. >>> next, queen latifah's here. ♪ [ female announcer ] it's fun to get more! and now, during onus dayat petsmart, get more free with bonus deals on select items throughout the store. pestmart. we love to see healthy, happy pets! the forecast is full of ifs. retireent these days, if i'm too exposed to downturns. if i'll go through my savings too fast. to help you feel more confident consider putting a portion of your savings in a metlife variable annuity. when the market goes up, it gives your assets a potential to grow. while protecting you if the market goes down with a steady stream of income. metlife annuities have helped over a million people stay on course with guarantees for the if in life. get answers about annuties at metlife.com. a deep ache all over. i found out that connected to our muscles are nerves that send messages through the body. my doctor diagnosed it as fibromyalgia, thought t

what bill deloitte takeover what food john diapies tours weir door by my running shoes? that same sort of thing happens when you could put a concrete definition on what we talk about. also it makes abundantly clear the thing that is so difficult in dealing with this problem which is this kind of gross inequity of wealth in our world which has always been a system is a great impediment to action because if you are in china or india and nation with hundreds of millions of poor peasants whose easiest way is to burn cheap coal just the way we did, it rankles due to look at the numbers you see there is no margin left for you to do the obvious and easy thing. that is one of the reasons that negotiations at copenhagen broke down that it is very difficult to make an grasp on both thence the fact we will have to transfer resources and the reality dictates they will have to find a different matt but in many ways the chinese are doing a better job of grappling with that reality at the moment they and we are. they clearly decided they would invest a lot of money in green energy and