israel has greed to a humanitarian cease-fire in gaza. but even if it was scheduled for tomorrow it would only last for a couple of hours. an israeli military said it could launch a ground strike in gaza. all of this is happening after a strike in gaza killed four palestinian children. also there is a proposal to make california into six separate states. we'll hear from the man who managed to get the plan on the california ballot. that and more coming up at 6:00 p.m. meet troy, the dog who may have saved his master's life >> numbers ling up against me zzling up against me. researchers put them to the test

under laboratory conditions. >> dogs can identify any kind of cancer sample? >> dr. shini somara, a mechanical engineer. tonight, can doctors save lives by bringing them into suspended ant i medication? dr. dilworth, a molecular scientist and i am phil torres. i am an entomologist. >> that's our team. let's do some noedz /* [ music ] >> guys, welcome to "techknow." joining me are car a santa maria, shini somara and krista dilworth. i am excited for today's episode

because it involves one of the best animals out there, man's best friend, the dog. and cara, you got to play with a bunch of dogs. we know dogs make us happy but they can also potentially make ? >> yeah. so there is evidence to show that dogs can actually detect cancer. and i got to visit the laboratory, some training facilities and even meet a woman whose dog detected her breast cancer. let's check it out. -year-old who grand chap pin rain dance or just plain troy as his family calls him is a pure-bread show dog but to his distinction. >> definitely credit him with saving my life. there is no question about it >> diane's family has a history of breast cancer. so she has been diligent about getting mammograms. in fact, she had been given a clean bill of health a few

months before when troy, then a puppy started acting strangely. >> he is nuzzling and nuzzling. i am like what the heck is going on? i start to scratch because i am highly allergic to his dander. >> that's when i found the lump. he was trying to tell me something. he clearly smelled or sensed or whatever he did but he knew something was not right. >> that's what got me to feel the lump >> diane had a double mastectomy. now? >> god only knows what it could have been had he not detected it >> a woman who detected breast cancer in her dog had the favor returned >> there are countless media reports from local news stations ranging from ping 5 in washington, illinois and nbc 11 in georgia. so many, in fact, researchers around the world have spent considerable time and money figuring out why dogs are such super sniffers. >> a bloodhound has 300 million

scent recenters in his nose. a human has 5. the dog's brain that analyzes those receptors is 40% larger than that of a human brain. when you look at a dog, the nose is half its face >> another advantage. humans use the same airway to breathe and smell. a dogs, one for olfaction, the other for res pration. breathing and smelling are two 13r59 functions. dogs can filter sense to a degree thooumz can't begin to comprehend. author and dog cognition researcher alexander horowitz breaks it down "inside of a dog." while humans may smell sugar in coffee, dogs can smell it in two olympic [ sighs ] swimming pools >> in west hills, the nc 2 foundation is screening and training dogs to detect cancer. master trainer dina safiris is

choosing dogs based uponblied but more importantly, their pers personal tality >> good. get out. go. get it. get it. get it. get it. get it. so, it's not so much about having a good nose. it's more about having kind of >> yes. >> it's the trainability, the willingness to want to repeat over and over again, wanting to do the same thing over and over again in a small room. so, and other dogs will become board by -- bored by it >> she trains dogs in something they can show interest in. the ball? >> it may be hidden deep in the box or the cancer. he can't get to his toy. so, he has to learn how to tell us. and just going up and down and sniffing and waiting for the one that's the right box is not good enough. now, we train him to sit or lie down or paw or bark at the correct one. so you are training what's called your alert. eventually once the dog can detect where the ball is hidden. dina introduces breath samples

from actual cancer patients. that's right. researchers here and in germany are testing dogs' ability to smell cancer from a person's breath. a much less invasive method for patients. once you have your cancer samples, it's very, very important to understand how many samples you need, how to rotate these samples throughout time, how to use old samples to help the dog build confidence and then introduce a new one. there is a formula i developed. it's about 371 specific steps. >> having participated two federally funded strength detection studies, dina is ang to share what she is learning friend. >> so where do dog trainers like yourself fit into this big picture of diagnosing and treating cancer? >> i think that dog trainers and doctors and scientists are like a pyramid here we need to help each other. i think that if we can all get together, i see myself as the bridge. i want to bring us together to help each other to start saving

lives now. >> a good girl. >> that's a very good girl. >> i think dogs have always saved our lives and i think we are just now recognizing the many ways that they can do that. >> just ahead on "techknow," we go inside the lab where scientists, researchers and vetnarians have joined forces to try and build an enose that can detect cancer as accurately as our canine companions. >> that's the trajectory to produce an artificial system that could ideally be as good as the dog >> good! >> we want to hear what you think about these stories. join the conversation by following us on twitter and at aljazeera.com.

>> the violence has continued just a couple of miles from here >> just a short while ago we heard a large air strike very close by... >> people here are worried that this already serious situation may escalate. >> for continuing coverage of the israeli - palestinian conflict, stay with al jazeera america your global news leader. welcome back to "techknow." cara, you just told us dogs can cancer. >> true. >> pretty incredible. >> uh-huh. >> what doctors are doing with incredible. >> it's true. dogs can smell cancer reliably but we don't know what it is in cancer that they are smelling. once we can figure that out, scientists should be able to create an electronic nose that will have wide-spread applications. check it out.

they make up almost half a dog's face for a reason. the nose is a dog's most valuable tool. researchers at the university of pennsylvania are trying to reb plic indicate it. their goal is to create the earliest detection system possible particularly for things like ovarian cancer >> have you noticed dogs can identify any kind of cancer sample sample? >> there are studies out there that have shown dogs to be effective at a variety of cancers but can one dog detect all of them? is there a universal cancer odor? probably not. so what we are trying to do is focus on individual cancers and find out what that is. i suspect that will probably will always have individual tests for different cancers. >> the working dog center of penn school of veterinarian medicine has been training dogs in scent detection since the

founder treated search and rescue canines did you 9-11. now they are training olen, tsunami and mcvein to sniff out cancer cells in tissue and most recently blood. the samples are donated by cancer patients >> this jar has the cancer plasma which is 10 >> all right? >> i am going to get olen. we will be back and run olen on the mil >> can't wait. he is ready? >> he loves this game. ready? >>. >> good boy! what a good boy. it is in, as he indicated >> these dogs are all given to the center by breeders. most come flu a long lineage of

states focus is, and that's what the secretaries focus is on. >> okay, we'll leave it there, thank you very much. for joining us from washington, d.c. >> thank you. still to come here on the program. >> bringing you in from gaza, where civilians are paying the highest price in an escalated conflict. and in sport. an apology to the nations of the world cup plans that went wrong.

booms. >> over the next few days we will determine if additional time is necessary to extend negotiations. third, we continue to support diplomatic efforts to end the violence between israel and hamas. as i said repeatedly israel has a right to defend itself from

rocket attacks that terrorize the israeli people. there is no country on earth that can be expected to live under a daily barrage of rockets. and i'm proud that the iron dome system that americans helped israel develop and fund has saved many israeli lives. but over the past two weeks we've all been heartbroken by the violence, especially the death and injury of so many innocent civilians in gaza, men, women, and children who are caught in the cross fire. that's why we have been working with our partners in the region to pursue a cease-fire. to protect civilians on both sides. now yesterday israel did agree to a cease-fire. unfortunately hamas continued to fire rockets at civilians, there by prolonging the oh conflict. but the israeli people and the palestinian people don't want to live like this.

they deserve to live in peace, security and free from fear. we'll continue diplomatic efforts to restore the cease-fire. over the next 24 hours we'll continue to stay in close contact with our friends and parties in the region, and we'll use all of our diplomatic resources and relationships to support efforts of closing a deal on a cease-fire. in the meantime we'll continue to stress the need to protect civilians in gaza and in israel, and to avoid further escalation. finally, given it's continued provocations in ukraine, today i have approved a new set of sanctions on some of russia's largest companies and financial institutions. along with our allies i repeatedly made it clear that russia must halt the flow of weapons and fighters across the border into ukraine, that russia

must urge separatists to release hostages and support cease-fire. that russia needs to pursue internationally-mediated talks and agree to meaningful monitors on the board. i've made this clear to mr. putin. many of our european partners have made this clear to mr. putin. we've pushed to resolve, and we need to see action more than words that russia is committed to resolve the actions at the border. so far russia has failed to take any steps i have mentioned. in fact, it's support has continued an. we're freezing the assets of several russia defense companies and blocking new financing of

some of russia's most important banks and energy companies. these sanctions are significant but also targeted designed to have the maximum impact on russia while limiting any spillover effects on american companies or those of our allies. now, we're taking these actions and close consultation with our european allies. we're meeting in brussels to agree on their next steps, and what we're expect something that the iran leadership will see once again that it's actions in ukraine have consequences, including a weakening russian economy and increasing diplomatic isolation. now meanwhile we're going to continue to stand with the ukrainian people as they seek to determine their own future, even in the midst of this crisis they have made remarkable progress these past few months. they held democratic elections. they elected a new president. they're pursuing important reforms and they signed a new association agreement with the european union. and the united states will continue to offer our strong

support to ukraine to stabilize it's economy and defend it's territory. because like any other people the ukrainians have the right to forge their own destiny. we live in a complex world and at a challenging time. none of these challenges lend themselves to quick or easy solutions but all of them require american leadership. as command center chief i'm confident if we stay patient and determined that we will in fact, neat thes meet these challenges. thank you very much. >> president obama not taking questions in the white house briefing room, but he did make some news. perhaps because of white house sensitivities it may be one of the reasons why the president decide not to take questions from reporters. the president said that russia continues to allow the flow of goods and weapons across the border to ukraine to pro-retur-n

separatists. the administration is essentially freezing defense-company assets that are out of russia. those are being frozen. furthermore the obama administration working with the treasury department is singly making life extremely difficult now for russian banks in terms of access to capital markets around the world including debt markets here in the united states. those russian banks traditionally use those markets for their own investments and borrowing in russia. in terms of what the president is doing today and it's much rougher than u.s. counterparts in europe wanted. actions in ukraine have consequences, that this is a complex world, challenging time, and he has made his displeasure of vladimir putin directly to vladimir putin, and the united

states continues to stand with the people of ukraine as they strengthen their relationship with europe. he made news with regard to the efforts to end violence between israel and hamas. he supports egypt to try to get a cease-fire between israel and hamas. that is controversial because some see egypt as not an honest broker. he may be putting thinks thumb on the scale of a cease-fire deal that may have been seen as tilted to israel's interests. the president said the administration along with its partners made real progress to halt the nuclear program. he pointed out it does not appear as if the united states and it's partners are going to meet a crucial july to deadlin--

to--20th deadline for an overreaching deal, and he'll determine with congress whether to give additional time for those talks. let's go to more about the ukraine with mike viqueira. what did you make about the president's statement there? >> reporter: well, you've seen president obama who has come under sharp criticism over the last weeks and months for what many see is infec infectality. iraq and the humanitarian crisis on america's own border on this immigration serge coming from central america. when he got down to the nuts and bolts and those negotiations in the new sanctions on russia over it's continuing aggression towards ukraine was an effort by the white house to go down this laundry list and click off one by one some of these foreign

policy hot spots. those where the president could cite some progress. he started off with afghanistan, secretary of state john kerry was there recently brokered a peace between the two candidates over these allegations, this controversy in afghanistan that threatens to tear apart the nation and the electoral system that would elect a president. enabling a truce, at least a temporary truce between these two candidates and moving on to iran. david, we have to tell you that there are indications now that that deadline may be extended. the president, secretary of state kerry set that jul july 20th deadline along with the p5+1 partners meeting in geneva, i think the president sending a very clear signal that he's leaning in that direction as well by indicating he's going to consult with congress in the next few days. ukraine is the issue that has vexed this president throughout the course this year. it was in the hague of what the

president called a hastily convened question of the g-7 of broad sections, the pinprick sanctions against individuals and banks in russia that were close to vladimir putin and the so-called olagarts who are running russia. he said it in a trip to asia. he said it in a g-7 proper mean june 5th when the president gave vladimir putin two, three, maybe four weeks in his words to stop his aggression. that deadline passed. nothing happened. the president now sort of with his back against the wall working with the e.u. which obviously has been reluctant, we've talked about it time and time again to impose those sanctions vulnerable as the e.u. is and much more so the united states to any retaliation of russia or losing trade with russia. you saw the president running through the laundry list not

taking questions but a comprehensive defense of his policy. >> mike viqueira at the white house. we'll take a break and then reset for the top of the hour will we'll review the president's sanction against russia and top russia companies and banks and defense firms for russia's mettling in ukraine. release. >> thousands calling for their freedom. >> it's a clear violation of their human rights. >> we have strongly urged the government to release those journalists. >> journalism is not a crime.

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>> there's been acrimony... >> the conservative ideal... >> it's an urgent need... and a host willing to ask the tough questions >> how do you explain it to yourself? and you'll get... the inside story ray suarez hosts inside story weekdays at 5 eastern only on al jazeera america >> this is al jazeera america live from new york city. we'll take a look at today's top stories. military officials say they will agree to a hue maintainaire cease-fire but they say the likelihood of a ground invasion after a cease-fire is very high. all this as the hamas rocket attacks and israeli airstrikes continue and one airstrike on a gaza beach killed four palestinian children.