. >> maddison, laura, samantha? >> yes? >> i am glad that you are together. my entire education team is here this morning. we have good news for you girls. you have entered our studentcam competition and you are winners. congratulations to you. even bigger news, you are our national grand prize winners. >> [giggling] >> they were so quiet for a second, i think you have gotten a reaction out of them. >> we are very proud of you. as you might remember from last year, we had manner -- winners in the middle school category and high-school category. you girls are all eighth grade winners, competed throughout most of our judging process for the middle school category. but for the grand prize you look at everyone. you even beat out the high school documentary. >> did you not say that there were like a thousand folks that entered? >> there were over 1000 videos. >> this video, "i have got the power," is terrific. madison, how did you pick the topic? >> like uncle works at a nuclear power plant. i was thinking about that, we were interested and we wanted to know more.

. >> maddison, laura, samantha? >> yes? >> i am glad that you are together. my entire education team is here this morning. we have good news for you girls. you have entered our studentcam competition and you are winners. congratulations to you. even bigger news, you are our national grand prize winners. >> [giggling] >> they were so quiet for a second, i think you have gotten a reaction out of them. >> we are very proud of you. as you might remember from last year, we had manner -- winners in the middle school category and high-school category. you girls are all eighth grade winners, competed throughout most of our judging process for the middle school category. but for the grand prize you look at everyone. you even beat out the high school documentary. >> did you not say that there were like a thousand folks that entered? >> there were over 1000 videos. >> this video, "i have got the power," is terrific. madison, how did you pick the topic? >> like uncle works at a nuclear power plant. i was thinking about that, we were interested and we wanted to know more.

samantha writer says additives mimicking the taste of sugar are saved, and heavily researched by the food and drug and ministration. >> if it is fta approved, we try to have some kind of assurance that it is generally considered safe for the consumer. >> concerns over the safety of artificial sweeteners come from people reporting headaches, chronic fatigue, and even links to cancer and some chemicals used in nutrasweet and most diet drinks. large studies have not been able to prove detrimental effect, except in people with a rare condition called pku, and some pregnant women. >> some of those things can cross over to the placenta, so there is discretion to be used. >> i like aspartame, others are at -- on like aspartame, others can be used in cooking. >> if you are using stevia products, is 300 times sweeter than sugar, and there are some complaints of an aftertaste. >> them a taste good and cold items like yogurt and cereals, but it can leave an aftertaste in hot items. >> the general consensus is that artificial sweeteners are harmless when consumed in moderation. low-calorie addit

samantha harris has more from hollywood. >>> coming up on entertainment tonight.a bullock's rare, "et" interview about infidelity. >> today, she faces marital crisis. but sandra was already talking about infidelity 13 years ago. >> there are so many different ways to cheat. people think infidelity is the way to cheat. i think it's sometimes far worse to emotionally cheat on somebody. if you are deprived of that. i would rather someone went around with 100 women than deprive me of that. >> reporter: it was the summer. it would be eight years before she met jesse. and sandra admits cheating herself. >> have you ever cheated? yes. i did. in college. it was the stupiddist thing -- stupidest thing i did. give the person the right to walk. >> also tonight, katherine heigl's first words about leaving "grey's anatomy." plus, diet or die ultimatum to her staff. >> diet or die? don't miss entertainment tonight here on wjz 13. >>> a cat in off the australia -- australia shows off her kitty pass. the swimming persian cat isn't afraid to get her paws wet. she says she began sw

. >> samantha, what was your favorite part of the process? >> when we got to go to the nuclear power plant, it is hard to get in there. you cannot just have a school id. there was a lot of cool stuff in there. students have not been allowed in since 9/11, so that was my favorite part. >> we enjoyed the photograph of the three of you in the plan with your hard hats on. your student population for the nuclear fission reaction, were they adults or students to participate on the playground? >> they were all students. in our school we had our four core teachers. >> it was very effective. this is quite a topic. you had access to a lot of people to be interviewed. your video was just so well done. do you want to hear what you want? >> sure. >> you will split the grand prize of $5,000. your teacher has won $1,000 in digital equipment for the school. pretty great news. did your minds change about nuclear energy? you did a great job showing multiple sides of this issue. what did you learn? what surprised you? >> it was surprising the amount of security

thank you again from the lebanese contingent like some of my american friends like andrew, matt, samantha. i also want to thank my colleagues at hudson, the board scholars and staff, and especially today's moderator, hudson's ceo ken weinstein. thanks for your support and advice, thanks for your loyalty and friendship and especially your great good humor. i'm also greatly indebted to my two fellow panelists not just for agreeing to participate in order to make this an interesting event, it is decidedly an honor and privilege to share this panel not least because their efforts in the middle east have played such a signal role in american policy over the last nine years and also in my thinking about the region. it was, as i write in the book, it was a great time to be an american in the region. it was a privilege to be represented by a u.s. government that had taken the side of freedom. i lived in bay -- beirut during the hay day of what we've called the -- [inaudible] for a global democracy strategy and assistant secretary feltman when he was the u.s. ambassador to lebanon, and many of the

. >> samantha, what was your favorite part of the process of making the documentary? >> i love swinton the nuclear power plant because it's hard to get in there and we almost didn't get in because you can't just have a school idea, it's kind of hard. and there's a lot of cool stuff in there. we got to see everything, usually middle school doesn't go in there anymore since 9/11 so that was my ever part. >> we enjoy in the photograph of the three of you in the plans with your hard hats on in your city population for the nuclear fission reaction, how did you get so many -- were the adults are students to participate under playground? >> they were all students. in our school we have our four core teachers and then all of their study centers, we read that one study center in did that. >> it was very attractive, this is quite a topic. you have access to a lot of people to be interviewed and your video was just so well done. do you want to hear what you have won? >> sure. [laughter] >> the grand prize of $5,000 and your teacher and, mr. johnson, has $1,000 for digital to pre