. >> caltech, now teaching at stanford. >> a teacher stanford university of washington. i teach a seminar. i looked at the picture, who is that handsome young fella you had a camera. >> twenty-three years ago. >> son matt, what did he do? he has a bachelors degree from berkeley, phd in latin american political history from columbia and he became a speechwriter for two and half years. currently he is a full-time faculty member to the university of california in washington in the center of rhode island to have it. he teaches full-time for them. he published an excellent book on ronald reagan called the right moment and he is finishing a book and he will call it eat or, sleep or, thank were, it's about civil war in 1940 to 1944. where did you meet jerry? >> in california. >> how long have you been married. >> forty-nine years this year. >> what did she do when you met her? she became a health policy analyst and she headed the nonprofit in los angeles called the center of healthcare rights with medicare and medicaid. when we moved to washington it was because of her job offe

but this guy at caltech can tell you speak up we can hear you. here is one of my favorite bits of trivia where researchers have discovered the micro biome once the body to live perk a remember the immune system has a terribly difficult task to deal with all the pathogens and microbes but it turns out the micro biome is sending signals across your gut lining we thought was so sealed we call it immune privileged that nothing got in or out bacterial cells till your immune system. to instruct the cells in your immune system to ramp up or slow down. that is the basic answer to your question. there is a relationship but it will be exceedingly important one - - potent and a healthy got in your immune system and the river that runs through it. remember i said it is sending signals that say attach? or stop? i just want to make clear this conversation, a big part of the molecules in your immune system are designed to put the brakes on the behalf are designed to stop it. we would not be here today without the immune system to put the brakes on. 's for mac i

he made a suggestion to a guy at caltech which is one of the world's leading bio experts and help me understand the microenvironment is the main character in the chapter on the subject. let me tell you a little bit about the micro biome that is not as an initiator. it is the biosphere of bacteria that lives inside of you largely in the gut, about half of your body cells or bacteria populating most of your gut. remember i mentioned that we are not at war with those bacteria's around us. so far from the immune system side, the bacteria certainly don't want to do any harm for us. we are there hotel, tent, youth hostel, go down the list. we are there home. they want to cooperate with us. a word of caution about the micro done under brian. just like i met, we talked about autoimmunity the micro biome research is maybe the most embryonic research of any field that is going to blow up in the extraordinary. it has the potential to tell us as much as we have ever known about human health. but, when you think of the collection of organisms in your gut, all mixed together, billions of different

scientists at caltech have re- examined the historic seismic data using a new algorithm running on the supercomputer. they have identified nearly 2 million tiny earthquakes undetectable until now. usgs says this new tool will help the bay area too. >> we have the same problems of faults that connect to each other like h and the rodgers creek salt and we get better images of how they connect over the years. >> reporter: studying these micro quakes that happen almost round-the-clock deep underground, scientists believe this will lead to a better understanding of when a fault may snap. it is also useful for studying swarm. >> san ramon regularly has earthquakes forms. with ten times as much data we would be able to track them that much more accurately and do better forecast for the future. >> reporter: do these millions of small earthquakes reduce stress on major faults? >> if they were really important to releasing energy on the faults we need to have 30 times as many. >> reporter: you don't see them come you don't feel them but they may be the first clue to better understanding how and

scientist at caltech in southern california have re- examined historic seismic data, using a new algorithm running on a supercomputer. they identified nearly 2 million tiny earthquakes, undetected until now. micro quakes. usg says this new tool will help the bay area as well. >> we have the same problems, of faults that connect to each other like the hayward and rogers creek fall, were getting better images on how they connect over the years. same for hayward and calaveras falls >> faults. >> it happened almost around the clock underground and scientists believe this will lead to a better understanding of when a fault may snap. it also was useful for studying swarms. >> we usually have earthquake swarms and san ramon with 10 times as much data we can track them accurately and you better forecasts on how they are behaving. >> duties millions of small earthquakes help reduce stress on the major faults? >>it's important to release energy on the faults if we do we need 30 times as many. >> you don't feel them or see them but they may be the first clue to understand the how and why of earthquak

>> reporter: living in california, it's a topic that caltech faculty member is used to talking about. >> i find it fascinating. >> reporter: but experiencing a powerful earthquake is another thing. according to the recent research the state may be in a earthquake alone. >> i hear people wanting to plan and prepare for that because it's something that can be potentially catastrophic. >> reporter: in a study released today and author said california is experiencing seismic silence. >> the next century seems like it needs to be busier. it could be six earthquakes or more. >> reporter: in the research, that is 2 1/2 years in the making. the study data from faults that carry the most traffic. they include the san andreas, and heyward faults. he concluded that there has not been enough ground rupturing earthquakes in the last 100 years. and one is overdue. >> these are earthquakes where the ground surface is actually physically broken. if you went there and there was a fence line that was initially straight, it would be offset. >> reporter: one of the ground rupturing quakes mentioned in th