neuroscientist carl hart. >> there are not many people studying marijuana.very difficult to get approved to study marijuana. >> what's nice about israel is that the government is helping the research to happen. >> and it's research that could give hope to patients like charlotte figge. scientists in israel are learning that marijuana use might actually protect the brain, not damage it. >> they've been able to show that it can decrease the amount of brain damage from head injuries in mice. >> right. to be able to give a medicine after the injury to reverse some of the damage, that's huge. >> i want to paint my nails. >> you want to paint your nails? i'll paint your nails. >> i literally see charlotte's brain making connections that haven't been made in years. it's almost seeming to build her brain where before it seemed broken. >> and while scientists are still at the early stages of knowing if this is actually happening, i can tell you it was remarkable to see her progress. in the three months since we first met her, we saw a change. she was now talking more

neuroscientist carl hart. >> there are not many people studying marijuana.fficult to get approved to study marijuana. >> what's nice about israel is that the government is helping the research to happen. >> and it's research that could give hope to patients like charlotte figge. scientists in israel are learning that marijuana use might actually protect the brain, not damage it. >> they've been able to show that it can decrease the amount of brain damage from head injuries in mice. >> right. to be able to give a medicine after the injury to reverse some of the damage, that's huge. >> i want to paint my nails. >> you want to paint your nails? i'll paint your nails. >> i literally see charlotte's brain making connections that haven't been made in years. it's almost seeming to build her brain where before it seemed broken. >> and while scientists are still at the early stages of knowing if this is actually happening, i can tell you it was remarkable to see her progress. in the three months since we first met her, we saw a change. she was now talking more. >> sa

neuroscientist carl hart. >> there are not many people studying marijuana.t's very difficult to get approved to study marijuana. >> what's nice about israel is that the government is helping the research to happen. >> and it's research that could give hope to patients like charlotte figge. scientists in israel are learning that marijuana use might actually protect the brain, not damage it. >> they've been able to show that it can decrease the amount of brain damage from head injuries in mice. >> right. to be able to give a medicine after the injury to reverse some of the damage, that's huge. >> i want to paint my nails. >> you want to paint your nails? i'll paint your nails. >> i literally see charlotte's brain making connections that haven't been made in years. it's almost seeming to build her brain where before it seemed broken. >> and while scientists are still at the early stages of knowing if this is actually happening, i can tell you it was remarkable to see her progress. in the three months since we first met her, we saw a change. she was now talking

neuroscientist carl hart. >> there are not many people studying marijuana.et approved to study marijuana. >> what's nice about israel is that the government is helping the research to happen. >> and it's research that could give hope to patients like charlotte figi. scientists in israel are learning that marijuana use might actually protect the brain, not damage it. >> they've been able to show that it can decrease the amount of brain damage from head injuries in mice. >> right. to be able to give a medicine after the injury to reverse some of the damage, that's huge. >> i want to paint my nails. >> you want to paint your nails? i'll paint your nails. >> i literally see charlotte's brain making connections that haven't been made in years. it's almost seeming to build her brain where before it seemed broken. >> and while scientists are still at the early stages of knowing if this is actually happening, i can tell you it was remarkable to see her progress. in the three months since we first met her, we saw a change. she was now talking more. >> say puppy. >> p

neuroscientist carl hart. >> there are not many people studying marijuana.very difficult to get approved to study marijuana. >> what's nice about israel is that the government is helping the research to happen. >> and it's research that could give hope to patients like charlotte figge. scientists in israel are learning that marijuana use might actually protect the brain, not damage it. >> they've been able to show that it can decrease the amount of brain damage from head injuries in mice. >> right. to be able to give a medicine after the injury to reverse some of the damage, that's huge. >> i want to paint my nails. >> you want to paint your nails? i'll paint your nails. >> i literally see charlotte's brain making connections that haven't been made in years. it's almost seeming to build her brain where before it seemed broken. >> and while scientists are still at the early stages of knowing if this is actually happening, i can tell you it was remarkable to see her progress. in the three months since we first met her, we saw a change. she was now talking more

recently i sat down with neuroscientist carl hart and some of the things we talked about was the notiona casual crack user, the relative harm of tobacco and crack ingestion for pregnant moms and the differences between meth and adderall which are basically -- well, you'll see. in a short amount of time, this man, dr. carl hart, managed to do exactly what the title of his book says it will do which is challenge everything i thought i knew about drugs and society. >> one of the things that we were interested in in our lab was we wanted to know whether or not crack cocaine users can say no to crack cocaine if they were offered the drug and they were also offered some alternative, in this case the experiment that we did was we offered them $5 as an alternative. and what you see is that the crack cocaine users will take a really -- when we're talking about a nice dose of crack cocaine, they will take crack on about half of the occasions and money on the other half. but if you increase the money to something like $20, they almost never take the drug, they always take the money. but that's rat

state of, you know -- >> and why that happens is exactly what columbia university neuroscientist carl hartinvestigating. >> exhale. >> research subjects in his lab smoke marijuana and then take a variety of cognitive tests. >> the effects will be disruption in memory, disruptions in inhibitory control. they will become slower at cognitive functioning, a wide range of things. these effects are temporary, but they're pretty pronounced, and they are clear. >> and it's slowly becoming clear to scientists what part of the brain is most affected. it's the prefrontal cortex. >> it's very important for planning, thinking, coordinating your behaviors. there are tons of marijuana receptors in this region, and we think that marijuana, particularly in the novice, can disrupt all of those behaviors. >> an impairment that hart cautions could be dangerous. especially when driving. >> you may prematurely hit your brakes. you may prematurely hit the gas pedal. a wide range of things. you may make a turn without looking more carefully. >> look at this experiment done by cnn affiliate kiro in washington stat

state of, you know -- >> and why that happens is exactly what columbia university neuroscientist carl hart >> exhale. >> research subjects in his lab smoke marijuana and then take a variety of cognitive tests. >> the effects will be disruption in memory, disruptions in inhibitory control. they will become slower at cognitive functioning, a wide range of things. these effects are temporary, but they're pretty pronounced, and they are clear. >> and it's slowly becoming clear to scientists what part of the brain is most affected. it's the prefrontal cortex. >> it's very important for planning, thinking, coordinating your behaviors. there are tons of marijuana receptors in this region, and we think that marijuana, particularly in the novice, can disrupt all of those behaviors. >> an impairment that hart cautions could be dangerous. especially when driving. >> you may prematurely hit your brakes. you may prematurely hit the gas pedal. a wide range of things. you may make a turn without looking more carefully. >> look at this experiment done by cnn affiliate kiro in washington state. subjects sm

neuroscientist carl hart. >> there are not many people studying marijuana.oved to study marijuana. >> what's nice about israel is that the government is helping the research to happen. >> and it's research that could give hope to patients like charlotte figge. scientists in israel are learning that marijuana use might actually protect the brain, not damage it. >> they've been able to show that it can decrease the amount of brain damage from head injuries in mice. >> right. to be able to give a medicine after the injury to reverse some of the damage, that's huge. >> i want to paint my nails. >> you want to paint your nails? i'll paint your nails. >> i literally see charlotte's brain making connections that haven't been made in years. it's almost seeming to build her brain where before it seemed broken. >> and while scientists are still at the early stages of knowing if this is actually happening, i can tell you it was remarkable to see her progress. in the three months since we first met her, we saw a change. she was now talking more. >> say puppy. >> puppy!

carl hart managed to do what the title of his book says it will do, challenge everything i thought iabout drugs and society. >> one of the things that we were interested in. we wanted to know whether or not crack/cocaine users could say no to crack/cocaine if they were offered the drug, and offered some alternative, in this case, the experiment that we did, we offered them $5 as an alternative. what you see, the crack/cocaine users, we're talking about a nice dose of crack/cocaine, they will take crack on half of the occasions and money on the other half. if you increase the money to something like $20. they almost never take the drug, they always take the money. that's rational behavior, and that's what you would expect. >> anyone watching this would say, every single person has had someone in their life that does cause them to be deeply irrational. to be deeply destructive things? to make choices in which they will walk away from what they should take for the substance? >> to be clear, these people are addicts, they meet criteria for drug addiction. that's one of the requirements t

carl hart, because i felt like he was just blowing my mind.ut the way i think about drugs and chemicals and the brain. and so i asked him in the hallway to set down with me again. i wanted him to come back. this time around, he blew my mind even more. this is so anathema to the way we think about this. it doesn't jive with what we've seen. there's part of me, that cannot possibly be true. well, it is true. really looking forward tomorrow to bring you more of that interview. [ male announcer ] prilosec otc is the number one doctor recommended frequent heartburn medicine for 8 straight years. one pill each morning. 24 hours. zero heartburn. >>> today, the florida state legislature is back in session, and you will never guess what's one of their top items on their agenda. >> can't take it no more! >> today, people gathered in front of the florida state capitol for the second day in a row protesting the legislature's conservative agenda on this, the first day of the state's legislative session. >> since stand your ground was put if place back in 2

carl hart, because i felt like he was just blowing my mind. think about drugs and chemicals and the brain. and so i asked him in the hallway to set down with me again. i wanted him to come back. this time around, he blew my mind even more. this is so anathema to the way we think about this. it doesn't jibe with what we've seen. there's part of me, that cannot possibly be true. well, it is true. really looking forward tomorrow to bring you more of that interview. and from your family, to your belongings, to your dreams for retirement, nationwide is here to protect what you love most. we put members first, because we don't have shareholders. join the nation. ♪ nationwide is on your side [ male announcer ] your eyes. even at a distance of 10 miles... the length of 146 football fields... they can see the light of a single candle. your eyes are amazing. look after them with centrum silver. multivitamins with lutein and vitamins a, c, and e to support healthy eyes and packed with key nutrients to support your heart and brain, too. centrum silver. fo

carl hart, because i felt like he was just blowing my mind.out drugs and chemicals and the brain. and so i asked him in the hallway to set down with me again. i wanted him to come back. this time around, he blew my mind even more. this is so anathema to the way we think about this. it doesn't jive with what we've seen. there's part of me, that cannot possibly be true. well, it is true. really looking forward tomorrow to bring you more of that interview. ♪ ♪ ♪ we'll be here at lifelock doing our thing: you do your swipe from anywhere thing, watching out for your identity, data breach or not. get lifelock protection and live life free. over one million hours of research. are inside are specific vitamins and minerals to help support your heart, brain and eyes. centrum silver. for the most amazing parts of you. she loves a lot of it's what you love about her. but your erectile dysfunction - that could be a question of blood flow. cialis tadalafil for daily use helps you be ready anytime the moment's right. you can be more confident in your ability