paulo. the protesters wanting her impeached. smaller gatherings are taking place in towns and city, the third time people have taken to the streets after protests in march and april. it s on political corruption, and they blame rousseff for the bad economy. reporter: the larger protest in brasilia, the capital rio de janeiro. it s unclear if the turn out was as large as the protests in braz brazil in march and april. it is important because it will go to the appetite among brazilians for impeachment. at the moment there s a huge gap between the numbers put forward by the organizers of the protests, and the ones put forward by the police. now, dilma rousseff is highly unpopular. she has the lowest approval rate ever for democratically elected president in this country, 7.7%, but that is not enough for impeaching her. you need to find - you need to keep the momentum for the organizers, bring more people on the streets and have a legal basis for that, at the moment none of t
we ll go inside the anti-gm movement. do you trust scientists. and you want to make a lab cocktail? that s our team. now let s do some science. hey guys, welcome to techknow. i m phil torres. guys, let s jump right into it. gmos just three letters but they hold a lot of debate. we re talking about genetically modified organisms. anything from bacteria, fish and giant trees. this debate targets science and scientists. it s true. the anti-gmo movement, it s got a lot of street credit. it s popular but it s anti -i don t know another way to put it, it s anti-science. i covered the march against monsato an o and i was hurt. as scientists we re trained to look at the data. that s what we try to keep in mind as we investigate genetically modified foods. genetically modified foods, a suspect that inspires controversy and fear. but one scientist is fighting back, trying to debunk one myth at a time. even if it means getting hate mail on a regular basis. i should h
and war. a man about to go on a killing spree stopped in his tracks. i came to see my friends and my first trip in europe and we stopped a terrorist, it s kind of crazy. american heroes on a train. we didn t know his gun wasn t working or anything like that. spencer just ran anyway. they tell their story. those three americans given credit for their role in stopping a suspected terrorist attack. they overran a man who was had a rifle and an ak 47. president obama said i wanted to thank the two brave individuals for preventing more tragedy staying place on this train, two reasons why on duty and off, ours is the finest fighting force the world has known. airman first class spencer stone was stabbed, when he confronted the gunman. college student anthony sadler were all invited by francois hollande to the elysses palace on friday. the man had been confronted first by a french passenger then overpowered by a group of american travelers including off duty u.s. militar
they would say we are going to knock on doors, being a machine yelling and screaming and making noise. another testament that there is more work to be done, video of racist chants sung by university of oklahoma fraternity brothers. where does this ugliness come from? it s scary to me that these young men who you expect more from or i expect more from. the tea party is not helping the country become post rachel either. bond says they are racist. they are wrong headed people doing wrong-headed thing, but i wouldn t compare them to the ku klux klan. the oeshl activist expressed outrage against lgbt laws. they helped me. why should i not help me? they helped me push the needle forward i am eager to push the needle forward to them. i spoke julian bond in atlanta, georgia. we sit here today all days, the 50th anniversary of the selma march, march 21st, 1965. tell me about that day for julian bond. it was a magic day. i was not in selma on that day. but i was here
and reunited again, iran and the u.k. reopen their embassies. i am here with all the sports as usain bolt is officially still the fastest man in the world. he wasn t the favorite this time, but the jamaican is still good enough to win a third world title in the 100 meters. some of them haven t eaten or slept in days. they have been cramped together in the rain, waiting in uncertainty, only to face police batons and stun grenades. the 2,000 refugees who finally made in it to macedonia, their journey has finally begun. they have boarded trains and buses to the take them to the bd of sear by a. they are aiming to get to hungary. they have headed to a packed refugees center where they have to apply for asylum. and the time pressure is on, hungary is building a razor wire fence on its border with serbia to prevent people from coming in. andrew simmons has this report from the macedonian border. reporter: there is no end it seems to the suffering, the exhaustion. it s a d