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A columnist for the "boston globe" says it is time to put a ban on heading the ball. he points to growing research that tied the sport to poor cognitive memory, motor skills and changes in brain matter. and one brain trauma researcher quoted in the op ed says what would you do if you saw an older guy hitting a 6-year-old with a fist or baseball bat? call the police. in football, soccer and other contact sports we turn our kids over to coaches and sanction our children to be hit in the head. >> however, the research is not conclusive and concussions are often not caused by headers, but from col...

Turns out they are. new research suggest a big chunk of our confidence, some say up to 50%, comes straight from our dna. i was busy researching the origins of confidence and i set out to learn my genetic blueprint. one saliva test and the help of a doctor, i learned in terms of the key genes which contribute to confidence, i come up short. i'm more prone to anxiety than resilience and more of a worrier than a warrior. that's one part after larger confidence equation. hormones like testosterone give men a boost. and the parts of our brain matter. women rely more heavy on a section called worry ...

Back to you, jon. jon: what a remarkable story. thanks very much. >> sure. jenna: when someone is really smart, often times one might say, well they have a really big brain. turns out it might actually be true. scientists discovered a gene that links the thickness of the brain's so-called gray matter to intelligence. the thicker the gray matter, the smarter the person and so on. once more, scientists say the new discovery why some people appear to have harder time learning than others. dr. marc siegel, fox news medical a-team and professor at nyu langone medical center. if i had to guess you h...

Bieber, pot, xanax. it is day 499 of -- just change the name to unrest. that's what i would like to do. he had weed and prescription meds in his system. his voluntary urine sample showed thc and the anti-anxiety drug xanax. he tested negative for cocaine, opiates, meth and brain matter. the report jives with what bieber told cops after he was busted for dui which was, quote -- which means i'm on drugs. ambassador, you were saying to me before the show started, you don't need to take any

Up, and i could see his eyes were fixed, and i could see through a hole in his skull that most of the brain matter in that area had been destroyed. and so i assumed immediately that it was a fatal wound, and that he was dead. >> there have been reports that you gave a thumbs down sign to the limousine behind you with other secret service. is that correct? >> that is true. i did that to make sure that they understood how serious the situation was. >> it took eight minutes to get to the parkland hospital in dallas. it must have been one of the longest eight minutes of your entire life. talk to m...