here is al jazeera's jake ward. >> reporter: every day

jake ward. nice to meet you. kirby kester who leads the hawaii crop improvement association shows me the fields that he and the companies he represents maintains. >> you are basically delivering sort of a refined product to the mainland for further refinement, further testing but you get it started out here? >> we do the product development out here. we make thousands and thousands of different breeding combinations in hawaii every winter. it's a numbers game searching for the highest yielding components that you want. obviously you guys are scientists, you are in the business of using science to make products. why not get out ahead of this, why not look at the growing body of evidence that this stuff is really, really toxic even in vanishing quantities, than say okay we're going to get a distance going on, reeventually what it is we're spraying, why not get ahead of it? >> that's where we disagree. you say growing body of evidence against it saying they are really toxic. there isn't. >> there is a growing body o

here is al jazeera's jake ward. >> reporter: every day approximately 3 billion people go to a form of work and bring with them their human abilities - their experience, compassion, manual dexterity. in a generation, how many of these jobs will be done by a machine? in several industries it seems robots could do the work. the jobs are harder than it looks. one of those things is dry cleaning, it takes human dexterity to deal with the variety of clothes that we wear. a robot can't look at this, know what it is and feed it through a standardized machine that could handle other pieces of clothing. >> as soon as i was born my parents had me on their backs working the machine. by the age of 7 i was putting expungers on hangers, taking ticket at the counter. by the age of 16 i was working on saturday so they could have a day off. my whole life i've pretty much worked at a drycleaners. >> we need humans to drive us around in taxis. >> they are pushing us to a world where humans are worse than necessary. at the moment we need human resources and judgment and senses letting us know dangerous st

in march, jake ward told us about a u.c. berkeley research. >> the research shows that, not deciding to shoot an unarmed white man sooner and more frequently than aa black man. >> the question is what can be done by unconscious bias? after all it's unconscious. google trained and hired managers to be more aware of the issue. but the work is still out, a new study at northwestern university is taking the idea of conquering unconscious bias one step further. the research shows that it is possible to reduce biases while a person sleeps. but the experiment has alarmed some ethicists. they question whether science designed to change your mind while you sleep could be abused. in a neuroscience lab in northwestern university in evanston illinois, will discover whether leonardo can be set up to have biases. all leonardo has been told is he's there for a sleep study. >> go ahead and follow the instructions on the screen and when you're ready you can press c-4. >> this replicated experiment is taking place for our cameras but if the r

jake ward has a closer look. >> the european space agency's plan was to set it down on comet 67 p last year, lock on to the surface and stay there in open sunlight sucking in power, conducting science, when it was expected the heat of the sun would burn the probe to death. instead the system for landing malfunctioned. it came in too hard. bounced and in that gravity, it bounced for hours. it wind up in shadow of some sompt meaning it wasn't getting the sunlight it needed. it blew through battery life. that was it. disaster. it was game over for a billion dollar mission. it was a happy accident. the lander survived the heat of the sun in the shadow taking refuge. since march of this year they have been turning on rosetta's receiver to listen, and this weekend they got lucky. scientists will reposition rosetta in the hopes of gathering scientific data from it. it will get more and more sunlight and power. there were a number of incidents on board. the first step is to use low-power ones. if that goes well, and there's enough power left over they try the stuff of drilling and hammering. t

jake ward has the story. >> every weekend, journal students meet here to crunch data to crump numbers. i brian berg is using old school journalism to figure out how many people are killed by police each year in this country. that's because there's no government agency that comprehensively tracks the number of people who die in police custody. >> okay so these are all the records that scale from our public records request in texas. the federal government tracks anything that matters. anything. the number of shoes sold, you know, rainfall in death feal. thevalley. the fact that they weren't collecting this information suggests it just didn't matter. >> zeke edwards thinks this is unsettling. >> we need this data not only to know what are the police doing today in this year but what did they do last year and what did they do the year before? are they shooting more people, are they disproportionately african american, are those rates growing? >> it wasn't supposed to be like this. back in 2000 congress passed the death in custody reporting act which requires authorities to report any deat

. >> based on science and research, jake ward, here's what's coming up at the top of the hour.ohn seigenthaler is here. >> coming up tonight at 8:00, we're going to continue the conversation about the confederate flag, and we talked to south carolina congressman james clyburn and he says that the south carolina legislature should not only remove the flag from the capital grounds but he wants it to come down from the citadel in charleston. >> the citadel was created two blocks from the emanuel ame church for the express purpose of maintaining slavery. now, the citadel to this day flies that confederate flag in its chapel. that flag needs to come out of the cimarron chapel. and it needs to come off of the public grounds all over this state. >> we're going to hear more from congressman clyburn in white. but also from hawaii, the big concern over use of pesticides in that paradise, when a developer of soy beans what they're doing to the land. >> see you then. oscar-winning composer, james horner, has died. died ♪ he brought that song to life and others from titanic and as well as c

our science and technology correspondent jake ward is in san francisco. jake, what happened?reporter: this was bad news after a very lucky, very -- sort of amazing run of good launches. they finally lost one here. the official cause has not been announced here but elon musk said he thought it was an overpressure event in the liquid oxygen tank. at the altitude this was flying at you need to carry your own oxygen with you, and think it was too much pressure in the liquid oxygen tank and that somehow caused the explosion. just a tremendously violent and surprising act, especially for those of us who have come to think of spacex as such a reliable partner. they reminded everybody that there's no reason to think of this but the hardest kind of work. >> it's not easy living in the frontier of space. i think sometimes folks think it seems routine, and that's when we get in trouble. >> reporter: it's the kind of thing, paul, where we have gotten used to this in a certain sense and to see something blow up as violently and spectacularly as this was a shock to everybody. >> does this

. >> i'm jake ward flying over the island of hawai'i. this is called the garden island.'s also a laboratory for bio tech company to develop seeds here. we'll look at the seeds and those companies in just a moment. >> a new report on our fragile planet. most of the corn grown in the u.s. is genetically modified mostly from seeds developed in the year round sunshine of hawai'i. the quarter of a billion dollar seed farming industries has become the largest agriculture sector in that state. but some residents say that they're being poisoned by the chemicals used on the seed farm, and they're fighting for laws to protect them. we went to investigate. >> hawai'i, the world's number one tourist destination is also the center of the fight of the companies that make crop seeds to feed billions and residents who say they're being poisoned by fields next door. >> they were right here in our backyard. >> carol and donachie live on can with kawaii. donachie is a cancer survivor and he says they have to move away. >> why do you feel that is the solution. >> i've been told by my doctor