kristen brown is a biotechnology journalist. tells me living longer is becoming something of an obsession for many techies. we tend to see people notjust being in their body as a machine but talking about it metaphorically as a machine. are they actually making any progress? it's growing so quickly right now, we understand so much more this year than we did last year even but the other thing about science is the more questions you answer, the more questions there are. one incredible idea being tested here can be traced back to this man, paul bert. in the mid—1800s, he claimed if you took an old mouse and literally stitched it together with a young mouse, the young mouse would become more agile, have a better memory and heal more quickly once it had the young blood flowing through its veins. of course we can't start stitching humans together, but there is a start—up that thinks it can do than expected thing. alkahest is a california based start—up that believes weekly injections of blood plasma from young people could fight the o

kristen brown is a biotechnology journalist.just thinking of their body as a machine but talking about it metaphorically as a machine. are they actually making any progress? it's growing so quickly right now, we understand so much more this year than we did last year even but the other thing about science is the more questions you answer, the more questions there are. 0ne incredible idea being tested here can be traced back to this man, paul bert. in the mid—1800s, he claimed if you took an old mouse and literally stitched it together with a young mouse, the old mouse would become more agile, have a better memory and heal more quickly once it had the young blood flowing through its veins. of course we can't start stitching humans together, but there is a start—up that thinks it can do than expected thing. alkahest is a california based start—up that believes weekly injections of blood plasma from young people could fight the onset of alzheimer's. we treated these patients once a week for four weeks with one unit of plasma, and w

kristen brown is a biotechnology journalist.s becoming something of an obsession for many techies. we tend to see people notjust thinking of their body as a machine but talking about it metaphorically as a machine. are they actually making any progress? it's growing so quickly right now, we understand so much more this year than we did last year even but the other thing about science is the more questions you answer, the more questions there are. the following morning my first stop after i skipped breakfast was geoffrey woo. he's chief executive of a firm called hvmn. it promotes fasting as a way to boost productivity and increase our healthspan, that is the number of years you are fully able before the troubles of old—age. geoffrey promotes the 36—hour faster that i'm on and his company sells products they claim will boost your body's reaction to fasting. so when you're extending beyond a 24—hour fast, you're dipping into a metabolic state called ketosis, which converts your stored body fat into a really efficient source of ene

kristen brown is a biotechnology journalist.t talking about it metaphorically as a machine. are they actually making any progress? it's growing so quickly right now, we understand so much more this year than we did last year even but the other thing about science is the more questions you answer, the more questions there are. 0ne incredible idea being tested here can be traced back to this man, paul bert. in the mid—1800s, he claimed if you took an old mouse and literally stitched it together with a young mouse, the young mouse would become more agile, have a better memory and heal more quickly once it had the young blood flowing through its veins. of course we can't start stitching humans together, but there is a start—up that thinks it can do than expected thing. alkahest is a california based start—up that believes weekly injections of blood plasma from young people could fight the onest of alzheimer's. we treated these patients once a week for four weeks with one unit of plasma, and we found the treatment was safe and very i

brown's take on is priceless. that's still ahead. >> can't wait. thank you kristen>>> the death toll is rising in southern california. this time around it's not wildfires but it is the aftermath fire ravaged land combined with rain eagles mudslides. crews are now working around the clock to rescue people trapped in their homes. iain page is our operations center with what's happening right now. iain? >> lucy, at least 13 people are dead. some homes just torn right from their foundation in southern california sees its first heavy rains in nearly a year. >> it's been very stressful. so it's been a long four plus weeks. >> more problems for california after the worst fire season on record residents across the state are now dealing with deadly flooding and mudslides. several homes swept from their foundations as mud flows into southern california neighborho neighborhoods from mountains scarred by recent wildfires. >> we have some of the steepest terrain of what was burned in the fire incident. so three of our canyons are identified produce significant amount of mud and