sand and scrub. at some point, these are the lives were used recreational -- these outer lands were used recreational lly. . >> there is. we hoave -- what, the third? >> depends on it you are coming the addition. but they all burned down. that was around 1900, so if you are ever stuck in traffic in the six-lane boulevard in 19th avenue, imagine what it was like back then. >> [inaudible] i would say this is after they began to develop some homesteading entries. >> it was a large chicken ranch out there. lawson chicken ranch was along 19th ave. >> [inaudible] >> not exactly. he donated the land later to the city, though. sort of the farm house feeling of the richmond. >> there is a water tower with a windmill in the back. >> right, get your water from wells. that was the early boathouses. looking at that map, sporting men would come out in the horses, have little races with their horses and carriages and the sea horse races, maybe get in a card game, have a drink of the way to the beach. >> but this wa

within this is phil, bay mud, shall mud, and then down sand. re tom hill, at one time second street ended at howard. at that point, there was a large hill. the wealthy people of san francisco lived on top of the hill, and churches were built along howard. then the city fathers in the 1920's let us knock down the hill, let us extend second street, and it finishes at the ballpark now. as you move south along second, that whole area, you get into rock. many of these old warehouse buildings, as you approach rincon hill, are sitting on rock. if you go down to king street, which is the street that fronts the ballpark, if you cross the street from the ballpark and the look on the sidewalk, there is actually a little brass plates that depict the location of the bluff that existed, the transition from the beach to the vertical cliffs that existed at second street. at second and king. all of that was taken down, and they have built warehouses. now at his condominium developments. and portions of mission bay. the first building of mission bay, third and t

the most common is dune sand. it is nothing but rocks that has been worn down from the sierras and deposited along the beaches. the wind blew that dune sand over most of the city. it is this mustard color. on the avenues, it is very thick. it can be up to 400 feet thick. as you moved south across slope boulevard, that is the tolar foundation. it was named after the first to score every in -- after the first discovery in the cemetery. the man was out there and noticed this material was unique. he started mapping it. he traced it all the way up to slope. the dune sand generally has the consistency of sugar. it is fine grained sand. it is usually loose. it is poorly graded. the colma foundation can be the same stand but it is denser. it may have to play in it. it is much stronger. it is an excellent supporting material. it is up to 10,000 years old on the dunes and. the colma is 40,000 to 60,000 years old. in some areas, it may be as old as 130,000 years. as you move across the city and get to the border, you get to

on my right is this defensive the positive dune sand. the wind blows, it comes from the ocean beach. because the sand is moving, you can see evidence along this side of the hill in 1989. the vibrations in accelerated. you have a significant amount of movement to the point that the homes that uc had very severe damage for two blocks. we recognized what the problem was at the time, it was a matter of loose sand on a very steep slope. thank you for the effort. we were able to get federal funding and design which you see in the upper walls. the lower walls was actually billed as part of the wpa. the upper wall was built in 1991-'92. this is a concrete wall and it has rocked going through the wall that extends the distance of 80 feet beyond the wall. the next earthquake occurs, the wall is designed to resist and the movement of the sand and allowed it to move down hill. this is a classic example of the creek and degree flow and exists all the way the area. we might see the other evidence. we have done nothing to improve the quality and the st

then there are other gee owe logic hazards and that's where the sand turns to quick sand, especially sands that are beneath the water level. other hazards associated is lateral spedding. after the soil lick -- becomed and flows, the dense --ification. >> if i eat a box of cereal and it's full, it's two inches down. >> that's true. damages associated with those phenomenas are severe. you've seen pictures along valencia street where the hotel is lying on its side. >> we're going down there. >> out in the sup set there were no homes, so we don't know how much dense densification will or and it will depend ton level. >> we have a lot of theories. >> yes. >> we don't think we're wrong, we just hope we never have that earthquake. the problem is -- >> well, we're going to have it. >> the reality is reear going to have it. >> so i have a question for lou. a lot of people, all around the world, have different theories for what causes earthquakes. here, you know, we sort of like to imagine that we have some scientific basis, so i brought along something from japan, actually. i wonder if you ca

you can see that it was sand, sand, sand. >> there were train tracks that unloaded in front of us development site. -- in front of this development site. >> these three houses, can you see them? they are still there. people were optimistic. they would buy three lots and say, we will build three two- story houses here and eventually it will fill in. it did, but it was three decades. this is sunset boulevard being put in. there were putting in this big boulevard. it is pointing out a goalie in the middle of the sand. -- a gully in the middle of the sand. >> woody was just given this time. >> i have been wanting one of these for years. i know they were at 5300. >> the building is still there. >> they were not the most enlightened company. they were strict about not showing homes to minorities. they got in trouble for that. willie brown actually made his name by going and trying to see one of the homes. it was a very political thing. he would walk up with a whole bunch of people in the person showing the home would sneak away. >> even in the teens, there were a lot of neighborhoods that had restr

pipeline and canada's tar sands. i wanted to write what i remembered about these events while mr cheney it seems your recollection may be a bit different than others when it comes to the war on terror so with the bush administration's trilogy of memoirs on different pages whose version of history will the world remember. it's tuesday august thirtieth seven pm in washington d.c. i'm christine for a sound you're watching our t.v. i want to start his show with us and things going around in the country that perhaps give us a feel for the pulse of the nation these days there are of course a number of factors to consider but i want to look first at president obama's approval rating for the third week in a row it is at the lowest in his presidency you take a look you can see according to gallup forty per cent and that includes this week a two day all time low of thirty eight percent approval and the economy of course primary concern for people from both parties and many cities across america the straw. will is manifesting i

luring away the sand. prevents new sand from leaving the beach. they set up a team of more than 15 experts to find a solution that will not hurt tourism. the beach is made up of ivory color sand. but any sands below the water line is muddy and not good for a tourist beach. so he decided to bring in a different sort of sand with larger particles. >> different color. but it is a bit different. because of the stability of the batch. >> reporter: the plan is to make a brand new beach 2.7 kilometers long. first he will bring in huge amounts of sand. 400,000 cubic meters to make a new beach 35 meters wide. in the middle he will bury sandbags to stop the beach from receding. even if erosion continues, it will stop at the sandbags. and it can be replaced. to realize his plan, he needs to get the backing of residents of pattaya who rely on tourism to make a living. he has already secured a budget of $10 million and is ready to start construction. it should be finished within a year. >> translator: there are many other tourist beaches in thailand with the s

the sand would shift. and it would blow around and they talked about if you lived in a car house how you might get up in the morning, open your door, and there would be a three-foot drop. or if you made the mistake of having your door open out, you might not be able to get out because the sand billowed up against the door in the night. so they build these car houses up on stilts just to keep them above the sand and above the fray. this idea of buying your own lot and getting your cars really booms. jacob heyman hits it, the jackpot. everybody wants to buy their own car house now. on sutro's land you could only rent it. now the creative carpenter starts emerging. they can take these cars, add additions, put them um in the air. -- up in the air. this is a house from a gardener in golden gate park. this is on the great highway. you can see he just put one car on the end as sort of a little sun room or viewing area facing the ocean. a lot of cars were used as rentals. these are little rental cabins where they

pipeline and canada's tar sands. and it's been called america's most segregated city and now those tensions are turning into violence so is the economy to blame for this trouble in milwaukee wisconsin and where is the mainstream media when you need it. i wanted to write what i remembered about president well mr cheney it seems your recollection may be different than everyone else's place from talking about the war on terror so with the bush administration's trilogy of memoirs on different pages whose version of history will the world remember. it's tuesday august thirtieth five pm in washington d.c. and christine for sound and watching our team starting off as our i want to talk about something that's been going on for the last several days just a few blocks from our studios outside of the white house every single day a group of protesters has been gathered outside speaking out against a proposed oil pipeline that appears to be in motion to be built it's called the keystone pipeline and would extend about seventeen h

luring away the sand. prevents new sand from leaving the beach. they set up a team of more than 15 experts to find a solution that will not hurt tourism. the beach is made up of ivory color sand. but any sands below the water line is muddy and not good for a tourist beach. so he decided to bring in a different sort of sand with larger particles. >> different color. but it is a bit different. because of the stability of the batch. >> reporter: the plan is to make a brand new beach 2.7 kilometers long. first he will bring in huge amounts of sand. 400,000 cubic meters to make a new beach 35 meters wide. in the middle he will bury sandbags to stop the beach from receding. even if erosion continues, it will stop at the sandbags. and it can be replaced. to realize his plan, he needs to get the backing of residents of pattaya who rely on tourism to make a living. he has already secured a budget of $10 million and is ready to start construction. it should be finished within a year. >> translator: there are many other tourist beaches in thailand with the s

you figure the sand has got to be safer than the surf.he case. even a small beach hole can be dangerous for little kids. the danger from shifting sands. a few minutes is all it takes to suffocate someone. a recent harvard study documented more than 50 cases in the past decade. nearly half of them fatal. >> the number of sand wall collapses was greater than that of unprovoked shark attacks. >> reporter: it's such a serious risk some communities are banning deep beach holes altogether. myrtle beach in south carolina's already done it. los angeles county may soon follow suit. what advice do you have for parents? >> don't let your kids dig holes. >> reporter: the lifeguards busy watching the water are trained to help. but better if they don't have to. apparently this can be quite dangerous. >> really? >> yeah, there was a kid yesterday who had to be rescued because the hole caved in on him. david wright, abc news, santa monica beach. >> i suppose there's a difference between piling sand on top of somebody who's clearly sitting above the sand

the sky is infinite, the sand is infinite. it's hard to keep your focus because you are constantly using peripheral vision looking all around you. it doesn't matter which way you walk after a while, you are just wandering. and so on the first trip out there, we didn't get to the sea because we just ended up wandering. it happens out there. you have a plan but the landscape becomes beautiful in a way that you weren't expecting and you start disappearing into it. you start forgetting why you are going in one direction. you start thinking, no, i just want to see that shadow over there and spend time there and then i want to see the next shadow and the next. it took 3 trips actually before we got to the sea. and all over at the edges of the dunes and sometimes even out in the middle of the dunes where you get into a deep hole, you will find a broken ceramic ojalla, you will find a sea shell that somebody carried in there, you will pick up the shell going what were you doing out here, why were you walking in this place, were you se

they're eyes on the tar sands so what do you think should the u.s. agree to let the keystone pipeline be built you can respond with on facebook twitter and you tube and who knows your response just might make. let's talk about the protect ip act and the bill that we've warned you about several times in the past the legislation introduced by senator patrick leahy that would allow the government to crack down on websites that have ties and i mean any ties to websites that share or link to or associate themselves with a pirate site also gives the government the right to sue any website who shares pirated information and it even gives the copyright holder the right to file a lawsuit against that site so the government already made it clear that they are out to destroy any infringing websites and as we've noted before they've overstepped their bounds way too many times they've even taken their anti-piracy efforts to other countries where u.s. regulations don't apply and they've stripped foreign websites of their abilities so like i said way overstepping t

until i could see others and i blew the sand away and i could see the rim of a broken pot. once i saw that, my eye was much sharper and i could see the details around me. i could see a small community, a family of maybe 12 had lived here. when i looked up into the cliff, i saw stacks of rock behind a little spall of the cliff that had stuck out and i realized there was a granary up there. i immediately started for it, climbing hand over hand up the cliff base. my breath tasted hot with discovery. i had found a secret. in past travels i had seen many granaries belonging to the anastasi but they had all been broken open by pot hunters or even by the residents themselves. this one had been built so no one would see it, like an attic accessed through a hidden floor. the structure was rectangular, like a cupboard. i touched its face with probing, diagnostic fingers, measuring it my eyes. 3 feet tall, 2 feet wide and 3 feet deep. i got up on my haunches and lightly dusted off the granaries roof which was undamaged. for 3,000 years not a breeze had entered this chamber, not an ink

full of sand. his father once said, if he knew how much sand would accumulate, he would not have built the tunnel. he wanted out. because the house was close to the border, they always had to show their ids. his father could not take it anymore. >> you would be walking home from the store and the police were always asking for your id. at ast, where did you come from? where are you going? where do you live? there were some that were just coming by. >> finally, it was time to leave. on the night of march 9, 1963, they escape from east berlin. 13 people crawl through this tunnel, which the east german secret police later photographed. while digging, an archeologist has found additional artifacts of the escape. >> you see here two bulbs from a string of christmas tree lights that family and friends used to eliminate the tunnel. not just for lighting, but also a signal. as soon as the authorities came into the house, it was turned off, which told the tunnel diggers to stop work immediately. >> the tunne