ross shimabuku is a engineer. >> it is turned on now. >> she is showing us something unusual from the lab. >> it brings another meaning to the aviator classes. >> find out how they are defining the next generation of delivery drones. >> i'm phil torres. 'm an entomologist. sleep. >> it will track my sleeve. marita, costa and i see if the devices work. that's the team. let's do some science. [ ♪ music ♪ ] >>> hi, guys i'm phil torres, and welcome to "techknow". i'm with costa and marita davison. instead of science, let's talk football. now, i'm a broncos fan. when i saw what the 49ers did with their new stadium, i'll feel bad every time the broncos beat the niners. >> if their game is half as good trouble. >> when you think n.f.l., small does not come to mind. it's full of big excitement and business. don't think of it in terms of being a big player. the stadium may be poised to change that. i got to check out environmental advances. >> reporter: it's game day at levi stadium, home of the san francisco 49ers, at first glance the scene in the parking lot it classical football - tailgati

ross shimabuku joins us with more. my question is why were the witnesses allowed to testify in the first place? >> the st louis county prosecutor said it was important to present the picture. bob mccullough said he has no regrets even though he knew some witnesses lied under oath. >> i thought it was important to present everybody and anybody including some not telling the truth. >> including number 40, who defended officer darren wilson, telling the grand jury michael brown was in the football position: mccullough, in his first interview since the grand jury decision, said her story had serious holes. >> this was a lady clearly not present when this occurred and recounted a statement that was, you know, out of the neighbourhood >>> muck cullo let -- mccullough let her and others testify. >> my determination was to put everyone on, and let the grand jurors assess their credibility. which they did. >> people mcilroy stands by the story tell the the "st louis post dispatch" saying: eventually the grand jury would decide

as ross shimabuku reports.e has taken special interests. >> this is a personal campaign by the president of uruguay. he was a prisoner under the military dictatorship and says he feels this. he says uruguay has a moral obligation to take in people who suffered, and called the case of the six low-level detainees an atrocious kidnapping. uruguay has taken in refugees, they have been provided with housing, schooling. they were welcomed by the uruguayan people. it's not so simple with the detainees. there's far from universal acceptance, and plans to accept them earlier in the year was shelved as they were in the midst of an election campaign. the president said he would speak on the issue. voters voted last week. a president takes over in march. in the meantime he is keen to accept the first batch of prisoners, six syrians, a palestinian and a tunisian, to be given the same deal as a syrian refugee, housing jobs and education, learning spanish. it's by no means cut and dried. there's still opposition to their arri

ross shimabuku has been following the protests. you were following the protests, there were big names. >> spike lee, film-maker was seen side by side with protesters were d.c. the the individuals that took center stage were the families of eric garner, michael brown and trayvon martin. all in attendance, yunated by grief. >> reporter: it was a national call to action. triggered by the two grand jury decisions involving police use of deadly force against unarmed black men. if they don't see this and make a change. i don't know what we'll do. >> busloads of demonstrators travelling all night across the country came from washington d.c. to voice concerns and demand change. >> i'm here for the future, hoping that it will make a difference, will be in place. >> i shouldn't be marching, i marched when i was a teenager. i marched for the same things. the demand included better plans for authorities, change to the system. congress was implored to take steps. >> there's why whites and blacks are here toot. show the world that this is not a

first, we begin with ross shimabuku in our studios. how was he killed? >> it was a daring attempt to rescue luke sumers for the second time. he and a south african hostage were killed by a captive during the raid to free them. this morning president obama released a statement saying: during the raid commandos stormed the hideout, not far from the capital city of sanaa, where summers was snatched off the streets in 2013. sumers had been shot when special forces reached him, and died before making it to a naval ship for medical treatment. al qaeda released a video, threatening to kill him if his demands of the u.s. were not met, but they never explained what they were. the group formed in 2009, with a main goal to target america. they are the group behind the failed underwear woming of a flight to -- bombing of a flight to detroit. 10 members were killed in the raids. less than two weeks ago, another raid freed eight foreign officers, but summers was released earlier. president obama said in a statement that its administration will do all that it can to br

ross shimabuku joins us. will the rain give californians relief?> california has been hit with enough rain to fill more than 15 million olympic soozed swimming pools. it will not save it from the drought. when it came, it came at a price because it left a path of distrugz. >> from northern calve to southern california, the weather system, known as the pineapple express delivered rain, devastating wind, severe flooding and massive mud slide. >> i never seen anything like this. >> in san francisco a transformer explosion. winds up to the 78 miles per hour downed trees and powerlines. at the height of the storm, 200,000 people lost power. one person was injured in san jose. >> in kamha rilo outside of los angeles, driving rain, up to 10 inches triggered a mud slide that this residents evacuated. >> i heard the door and a loud think. i knew i was in trouble. >> 10 homes buried in debris. many damaged. the path of destruction - knock down trees and everything that stood in its way. raging floodwaters had emergency responders on the move. one rescue work

ross shimabuku is here with more. >> the large crowds took over the mall's rotunda as shoppers were trying to grab last minute presents. the message - black lives matter. >> more than 3,000 people signed up to take part in the demonstration. the turn out in the hundreds. they carried posters and chanted around the mall. some shops locked their doors, pulling down screens, fearing the crowds could get angry. putting a halt it a busy shopping day. >> they have a right to protest. i department think it should be an inconvenience. >> it's inconvenient. we want to shop. it's christmas. we want to give gifts to the family. we can't get in. >> mall officials posted a warning on monitors and loud speakers asking the crowd to break up. security lined up, and police in riot gear surrounded the mall. a final warning was issued. 25 people were taken into custody. there were protests in baltimore, philadelphia and atlanta >>> thank you. hundreds of cuban americans took to the streets of miami, furious over president obama's plan to restore relations with havana. raul castro, cuba's president, said on s