millions and millions of people that drink coffee in los angeles alone you can start to understand how we see something like this in every single river every single creek everest single stream and los angeles behind me is compton creek it's one of the many streams that drains the los angeles area now this stream will go into the los angeles river and then out to the civic ocean the purpose of this boat is to to get attention and get politicians get other schoolteachers get the public to look at us and listen to our story. listening to marcus and his story is like being in most of the climate seas and taking the time to look. in the mediterranean alone there are three million tons of garbage drifting around and eighty percent of it is plastic. we don't think about it but the sea bed wasn't always covered with these or from an identifiable drifting object. we're really the third generation to make massive use of plastics. all this is the result of sixty years of consumption. we've let plastic colonize the sea. on the surface. a few meters down. and at the depths of one thousand meters. with all of this material will be down here for ag

and then urban roads like this in the los angeles river and this is being built. this is mira loma park. this is lark merced blvd. it's all made of clay. it's going to slump. these are the roads built in the oakland hills. nate, red woods. skyline. and enabled them to go up and develop the hills. the rural roads that go through the coast range. this enabled them to get their stuff to market. this is at road built by the ccc. this is a bridge. this is highway one and you won't know, except you look at the bridge and you will see dates, 1938, 1939. the airstrips are ccc. and the one out at treasure island. long beach, burbank. this is oakland and the whole built line railroad was redone. 19 is a pwa project and our great amphitheatres are from that time. this is santa barbara bowl. this is the forest theater in carmel and these are ccc workers putting huge bolder. here's 6 thousand people getting ready to enjoy oklahoma in that theater. big basin is a ccc project and this one, on the east river, new york. a project built where people from the lower east side could s

los angeles. the wettest december since 1889. in sacramento levee secured rivers are at flood levels. farm fields are saturated. mudslides cost damage in san bernardino county. the fear is the latest storms could trigger more. in the meantime, thin-blooded californians are just trying to stay warm. >> layers, lots of clothes. >> unlike the other storm systems we've seen in the past two weeks this one's moving pretty quickly, expected to be out of the area by the end of the day today. we expect drier conditions for the rest of the week. and hoping to see some california sunshine. ben tracy, cbs news. >> scientists will announce plans for a blood test for cancer today. the test could potentially be able to spot a single cancer cell among a billion healthy ones. reso muchers at massachusetts general hospital join johnson and johnson and say it might transform care for many type of cancers. >> in ohio, family and friends this morning remember a deputy killed during a new year's day shooting. in that shooting a second deputy was wounded and the suspect was killed. cynthia bowers has more.