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>> a lot of it is a lack of education. in the first trimester at three and a half weeks, the heart is already breathing. the brain waves are beginning to form. the child grows so much in the first trimester. after the heart is beating, abortion should be banned. they don't realize that is three and a half weeks. i think we should really acknowledge prenatal development and it say these are human beings too. >> sean: that's my point. people have a lot of choice, they have a lot of choices before they have sex and have a baby. i know you are for contraception, right? >> what is sex all about? if...

Education. in the first trimester at three and a half weeks, the heart is already beating, the brain waves are already beginning to form, it's incredible how quickly the child grows in the first trimester. mostil americans and the polls y that after the heart is beating, abortion should be banned. they don't realize that's three and a half weeks! we should acknowledge prenatal development and say these are human beings, too, deserve human rights. >> sean: that's my point. i'm pro-choice, a lot of choices before they decide to have sex and make a baby cannot protect themselves. i know you discr...

Are they still conclusively or subconsciously part of our adult lives? >> spokane police. police department. hey, hey, talk to me. talk to me. wait, let go of her. hey -- >> new research partly funded by the department of justice is now studying bias in police officers and how they react to light-skinned suspects versus dark skinned. at this lab in spokane, washington, officers undergo a simulation. their brain waves and heart rates are monitored to see how they react during confrontations like this one. >> you receive a call from a person who says a convenience store is being robbed. do you u...

Austin is known for serving up some of the best and the home to the south by southwest festival where thousands go to find tomorrow's big thing in technology. why not combine the two? welcome to the tasty lab that will map your brain waves while you dine. this device meant to measure how much flavor i can pick up in each dish. very attractive, i'm sure. >> that's right. >> reporter: now it is time to dig in. >> dessert first? >> you have a ton of these little squiggles. the amount of variance in your brain waves is really high right now. >> reporter: when i bite in to the barbecue -- look at h...

Do you understand? >> yes. >> standby. >> hey sh, hey. back up, back up. back up! put your hands up. put your hands up. drop the knife right now. drop it. >> reporter: while the volunteers make split second decisions, brain waves and hard rates checked part of an ambitious research project at washington state university partly funded by the defense department with the goal of improving justice in america. professor brian viola is the man in charge. >> we don't know yet still 100 some years since teddy roosevelt had the first police firearms training in new york, we still don't know whether the...