the mekong is also needed on land.he clean water it provides is essential, especially during the dry season. prun sarot grows cabbage, pumpkins and cucumbers in her vegetable garden. and the soil is always thirsty. >> we use water from the river for our fruit plantations, as drinking water for the family, to do laundry and lots more. when i think about it, for everything. >> and when the temperatures rise to 40 degrees celsius, the mekong can be the last resort for escaping the heat. we've reached the end of our journey on the mekong in phnom penh. the river is also a main artery here in the capital. damming the river could strangulate that artery. many fear its impact would be irreversible. >> if the dan sahong dam is going to be built, with the negative impact including the quality of water, including the density of fishery and so on, we could not address it. we could not recover back the number of fish. because the habitat of dolphins has been 1000 years old. >> the mekong would be poorer without its dolphins and th

they were patrolling the mekong river. he came upon a couple of enemies, and the bad guys returned fire. one got back into the cove. williams said, we're going in after them. vietcong on both banks. rather than turn around, they went charging through. knocking down the boats. firing. the enemy, unfortunately for them, were killing each other because they were firing at the boat. missing the boat and killing their own people. well, he did not just do that, he got to the other end, what do we do now? he turned around and came back again. this involved a three-hour battle. where he and two boats, each boat had four crewmen. these eight guys. they called in air support but he did not want to wait for it because it it was getting dark. so he made another run. the long and the short is, he got the medal of honor. they destroyed, in some reports, 50 boats. that seems exaggerated. they did tear up that viet-cong unit. that is the river patrol force. another major naval contingent in the mekong delta was called the mobile riverine

they are changing a long history of rice farming in the mekong delta.ow they are not only feeding vietnam, but helping build a major sustainable export industry. vietnam has been one of the most rapidly growing countries of the last decade. we see this in the booming urban center of ho chi minh city. one key to this development has been vietnam's physical geography, along with a shift from collective to commercial agriculture. for now, there is no reason to expect that vietnam's growth should not continue well into the 21st century. captioned by media access group at wgbh access.wgbh.org you have the right to remain silent. you have the right to be heard. anything you say can be used against you... what you say will be listened to with dignity and respect. you have the right to information and assistance. [ cell door closes ] justice isn't served until crime victims are.

and we travel along the mekong in cambodia in search of the last river dolphins.he first baby conceived through in vitro fertilization. in july 1978, the birth of louise joy brown made headlines around the world. baby-making still requires an egg and a sperm cell. buar

inspired by seeing a photograph showing american troops wading through, waist deep in the water of the mekongi was asked to be on the smothers brothers program, and the first time i sang it, it was scissored out of the tape, in october of 1967. but the smothers brothers took to the print media and said, "hey, cbs is censoring our best jokes. it censored seeger's best song. what's going on here?" and finally in january of 1968, cbs said, "okay, okay, he can sing the song." ♪ all at once, the moon clouded over. ♪ ♪ we heard a gurgling cry. ♪ a few seconds later, ♪ the captain's helmet was all that floated by. ♪ a friend of mine was working in the distribution office for columbia records in denver, colorado. he says, "pete, you know, my boss took one listen to this record and exploded." he says, "those people in new york must be nuts to think i could promote a record like this." he said, "pete, your record did not leave the shelf." so as i say, i can't prove that songs do anything, but people in control of the country think they do. ♪ another stream had joined the big muddy ♪ ♪ about a half mile

and we travel along the mekong in cambodia in search of the last river dolphins. but first, what happens when baby-making becomes a business? the history of in vitro fertilization began just 37 years ago. the first baby conceived through in vitro fertilization. in july 1978, the birth of louise joy brown made headlines around the world. baby-making still requires an