of an office building and a few moments later or there were other people in the lobby. and a few moments later, a person comes in who completely covered in dust. and you couldn't really tell what color to dress or shoes or anything like that. and this turned out to be marcy boarders and she stopped for a 2nd by a bank of elevators. and i took one frame of her and then a group of people were helping her up some stairs. i think thinking it would be safer to get out and get out of the lobby and it was. so that's how i came about to take a photo. ah, and now the top stories on al jazeera, somber ceremonies have been held in the us to mark 20 years since the september 11th attacks, the deadliest on american soil at $1246.00, gmc bells were wrong ahead of

a moment of silence. to mark the moment when american airlines flight 11 crashed into the north tower at the world trade center presidents, past and present to joined the families of those who died of ground 0 for the memorial. common ratios have also been held that the set of the attack on the tap on the pentagon as well as shank spill, pennsylvania. we're a passenger jet, crashed into a field after being hijacked, hijacked the former president george w bush, who was president at the time of the attacks and vice president cameron harris delivered a message of unity at the memorial here the intended targets became the instruments of rescue and many who are now alive o a vast, unconscious, dead to the defiance displayed in the skies above this field. there are many who still struggle with a lonely pain that cuts deep within and those fateful hours. we

learn to other lessons as well. we saw that americans were vulnerable, but not fragile. i'm investigation by the new york times has revealed the united states final air. striking galveston may have killed an aid worker by mistake. 10 people including 7 children, were killed in the august 29 stroma pac targeting iso fighters, income level security officials in northern iraq, say that there has been a growing attack near us forces a station that intervene international airport. at least 3 missiles hit inside the airport, that's according to local sources. 3 other massage landed outside the airport houses a base for coalition forces. there are no immediate reports of casualties. those are the top stories that stay with us or thrice change of power is next. thanks for

watching. i'll see you tomorrow. bye bye. talk to al jazeera. we what gives you hope that it is going to be peace because the situation on the ground seems to be pointing, otherwise we listen. we were never on whatever road to off migration. we meet with global news makers and talk about the stories on sierra ah, me, we're in the middle of the biggest energy transition to industrial revolution. the cobit $900.00 pandemic is accelerates now move away from fossil fuel price tags, renewables, particularly solar, come down. it is now possible to actually imagine

a carbon neutral world to run on clean energy. but there is still a long way to guys with climate change as to what the market, the sign for. we must talk global greenhouse gas emissions by 2034 to have any hope of reaching net 0 by 2050 and avoiding the worst effect global warming for the change while it is happening, needs to happen quicker in this program will be la, can't see the solutions that have a part to play and that transformation on the all the islands in the u. k. scientists working with one of clean energy is holy grails, green, hydrogen, and in norway, a carbon neutral data center is using the force of nature to power a digital life. the global demand for energy is increasing, but burning fossil fuels is polluting and it's warming upon it with devastate

impact for life on earth. renewable energy from when sun and sea cheaper than ever was intermittent. it's difficult to store. a few of the future is emerging, which could prove fundamental to de carbonite, the global economy. i've come to the orkney islands of the north coast of the u. k, where a network of scientists and researches approving the missing link in the next renewable energy revolution might be found in the simplest and most abundant elements. hydrogen, ah, the universe is about 73 percent hydrogen mainly occurring as gas. but on earth, most hydrogen is contained in water is the h in h to row after it's generated from water can be used as a few. it poses cause buses and even spacecraft. but in order to extract it from water, you need electricity. when that's produced using fossil fuse,

it contributes to greenhouse gas emissions. in order to be known as the energy islands, scientists have discovered how to produce green hydrogen using renewable power, generated by wind farms and title turbines. it could be a game changer. ah, meeting a del lydia dale who's a hydrogen project manager and was brought up on orkney. just let me know when we have a sense of felt sure. see, we need to do thanks for our sales doctor for we're not really get in touch on any we come to shop and say when a bought me 13 inhabited islands to see how they produce. i just kind of a joke to possession of small, quiet island for quite a high tech energy for this turbine is owned by local residents and produces more energy than the local grid can handle. the excess power is used in hydrogen production. i'm no scientist, but i could see on the the train that says,

explosive compress gas. yeah. and what is actually happening in these districts? what's going on in these boxes? so if they're working energy production site, before i was done in our site, what's the connection between? when did hydrogen, we have the wind turbine going round here today. when it reaches a certain meters per 2nd, we switch the energy production over to produce hydrogen. these metal boxes contain the key piece of machinery and electrolyte that generates hydrogen gas and electric current flows through the electrolyzer causing water to break down into hydrogen and oxygen. hydrogen st collected and compressed so the electrolyzer just takes normal drinking or use of the energy from the wind turbine. it splits each 2 washer and to hydrogen and oxygen. we capture the hydrogen for you for energy and the oxygen at the moment. it's just a tough fear, so your re diverting that wind energy into hydrogen as storing and storing the high

is transported by trailer and used all over orkney, some in domestic heating, but mostly in commercial vehicles and ferries. in the trailers, the hydrogen stored under pressure at $184.00 times its original density. that's a lot of energy. a meeting with james ferguson, a specialist and hydrogen storage. the highly inflammable gas is locked away in compounds and the key site. oh wow. oh gosh, so one of the big advantages of hydrogen is that is a kind of option for seasonal energy storage. and that's when we want to store a lot of energy over months. so we know that in the u. k. during the winter, it's very blue. it's very windy if we go to a wind turbine based energy system. we're going to have a lot more generated in the winter than we need. and so we can capture that and store it from the form of hydrogen, and then keep it until the summer when we don't have any wind blowing and,

but we still using energy but you make was. so how is hydrogen use as a fuel where? well, james has a rather naughty way of demonstrating this with a toy car that looks about what's 20 you know what, it shows me how to produce hydrogen with many electrolytes. so we just wait a moment, we're going to generate some hydrogen. we're going to build up an electric current passing through the water forms hydrogen mobile number, some gas storage here that we didn't have before. now i'm going to take my cable round here and you can see now that the gases are flowing into the fuel cell. and then that is going to allow us to p with the fargo that is absolutely better. the principal, to pose the fuel cell in james is toy car is the same when scaled up to power a fleet fight council back on the island. well, completely silent,

completely silent. wow. you can sometimes hear the compressor from the hydrogen when it's when it kicks in. it, you know, here we, wow, that's all you hear. david hannon is working with the council to expand its use of hydrogen technology. so for a long time, we're talking about electric vehicles as being the future of, of green transportation. what do you get? a hydrogen powered vehicle that you wouldn't get of an electric vehicle? this is also about 3 runs off the battery. but then the hydrogen is yours to be extend the range on it. so if you're either traveling long distances, you can potentially double range and is another advantage. it's quick to fuel with electrons battery, you might take from half an r t r to charge your battery, whereas this is pretty much instantaneous, you know, talking couple of minutes normally we'd expect to see an exhaust stick that the back of eventually this. yeah. and you can see there's no source here,

i mean same as any over electric vehicle. obviously we've got hydrogen, but then the sort of emissions of odd is water. paper is what's available here. yeah. right. wow. all right, really? i whispered off, there's me, it's great to hear. house seems to be growing all the time. and there's that awareness of the importance of this kind of network or this ecology of entities when you live in an archipelago. another important form of transport is very orkney fe, company aubrey, 74 different connections, and there are more than 20000 sailings each year with the fuel used in shipping, badly polluting. i, david for david hitt who works with the f. a company in green hydrogen is part of this plan to clean up the operation. and they all happens below deck. ok. have no idea what we get into it,

but here we go. oh wow. both the ship. what we looking at in the cylinders contain site looks like towards the leadership fuel. what are you using? it's hydrogen, hydrogen, it's doing that system will run regenerated engine light steering safety systems and the the lights and everything. and so when in the future, hydrogen will be used to drive all ships, operations, including propulsion within 2 years. that will be stopping in august also shipping steps that already established fans and ferries powered by green hydrogen just part of the picture in orkney pioneering research into how the fuel could play a global role in transport and beyond. it's happening here at the orkney research

and innovation campus. one of the most important projects is in a be ation ah, in a normal year, nearly $14000000.00 flights world wage result in heavy c o. 2 emissions search for an alternative fuel urgent when company collaborating with scientists in orkney is the rule. avia. i contact director survey kids live so excited about their 1st 15 minute long hydrogen test late. it was the combination of almost 3 years of research and frankly, it was, it was for delivering the baby. the full game was so relieved and so excited at the same time. i know that you guys are planning to fly here with one of your hydrogen per claim o the final flight of our 5 fire one project. we'll be taking place from for can you or can you use famous for it being hydrogen?

can you give us a time schedule of when you think that we will see passenger planes in the sky running on hydrogen? of course the technologies in its infancy. but i personally believe that 15 to 20 years, they will be a law. the death wind using hydrogen, and this is truly exciting. so if we can rise to the challenges of our energy economy, our future transportation needs, it means embracing a range of solutions. and i think what they're doing here orkney is proving the green hydrogen me pot. the green hydrogen is beginning to take home. it's a key part the eas plan to come to well 1st carbon neutral constant by 2050. a new projects have been developed since chile saudi arabia, the united states. yes, there is still a way to go before green. hydrogen is proven to be scalable and cost effective,

but it is gaining traction. and it's one of a number of current trends that have a world free of fossil fuels. there is definitely a new power system in a new energy assistance emerg bar i. whether we look at power, generation and distribution, or whether we look at transports, there is no doubt that we are in the middle of the most consequential transition in the energy space that we have seen in 100 years. it is a very exciting moment. it's also a nerve wracking moment, because we know that if we don't get to half emissions by 2030, it will be too late to do anything substantial about climate change. this is our last window of opportunity to bend the curve of emission and get on to a did current track. undoing society would be

a society that when represent clean energy, that energy would be centralized, cheap ubiquity, we would be able to provide power to every single home on this planet. we currently have 800000000 people who do not have the power, meaning they're in abject poverty by moving over 100 percent clean energy d centralized. we can make energy big quick and we can bring those were under the line of poverty over that line. a green society would be an economy that has smart grid that has storage available to all renewable energy generation. sources would also be society in which there is efficient and clean transport. passenger vehicles would offer transport as a service,

not being a possession of any individual. and heavy truck would be using clean field and finally to these would be clean wyatt because we would have put the internal combustion engine into them. and video would be organized into smaller communities, around food and energy at the beginning of the most just science, the decade in the history of human kind. it behooves all of us to understand that this has been challenging and will continue to be challenging. but we can do that, we can address climate change in a timely fashion. we can avert the worst just after the climate change. and in so doing, we can bring a much better quality of life for all citizens of this planet. and certainly to the

ecosystem upon which we depend, the mm. people across the planet, i'm spending an increasing amount of time online from work meetings and catching up with friends to move it streaming and shopping. we are now more reliant than ever on platform which generate and store data. but this data doesn't just vanish into thin air, it comes at a very real environmental costs. everything we do on line passes through data centers, which consume huge amounts of entity and emit nearly as much c o 2 as the airline industry. i'm in no way to see how one center is honda thing. the energy of these fuel was to stole our digital information without a heavy comp and footprint. this is a famous tourist attraction and photo hotspot poke, is told, and then no way it rolls hundreds of thousands of visitors every year.

i'm curious to find out what people know about the data, all these photos generate. so when you take a selfie, it land somewhere, have you ever met in where that could be? i think the 1st time i would imagine if you're asking, i haven't been thinking about it. no, i have no idea. i send it to google, i guess in the cloud, in the cloud, and do you know what the cloud is? storage place? ah night myself. most people only have vague ideas of where all our data has kept. i've come to university of savannah to meet an expert on data storage and find out where ourselves, he's end up. the photo is out will be stored in the memory of their phone. and then if you'll share the photo while you want to back up the photo into the cloud,

it will end up in some data center remotely could be in europe. it could be also in a remote fi across the atlantic. and both they have accumulated in those data center and those walls force us to have a big, big data center. so the problem for sustainability, how long or how much data we have to store them in recent years, many of us have been moving into the digital realm and even more so under the curve at 19 pandemic, per year for the study. so that's our online habits. take a heavy toll on the environment. a typical search which passes through data centers processing and storing information requires as much energy as illuminating a 60 what light bulb for 17 seconds. that doesn't sound like much until you realize google alone processes 3500000000 searches

a day. around one percent of electricity globally is consumed by data centers, many of which provide remote storage facilities or what is also known as the cloud . is estimated that in 10 years is our data network grows. almost 7 percent of all electricity will be used just to power and qu huge servers, preserving everything from billions of family photos to big data on space travel. so where and how you store your data can make all the difference. and no way is ahead of the game on this since its power, nearly a 100 percent by renewable energy, most of which comes from hydro power. i'm on my way to benefit and i'm near. i've heard they have an old military storage. but instead of storing to all hits, they now stole billions of information all over the world. the underground green mountain data center which opened in 2013 it's carbon neutral. it's rod and

hydropower from water rest of us on the mountains. so question nice to meet you. nice to meet you as well. ah, oh wow. this is like being in a james film. i can see that this is very secure. this is very secure. wow, thank you. both. this is how it looks when we took over there to fight here is empty space, but it will not be empty forever. as soon as we grow, this will be a data center as well. so know we're entering what people refer to as the cloud. this is where our customers are running their server storage equipment.

so what kind of information is still here? it could be anything from storage, your picture to national critical infrastructure. if you'd be kid at home doing their lecture online. so many people when they think about the clouds, they think out in the open as they're saying, white and fluffy. but actually the cloud is ms had a and it, and it's noisy, it's black and it's noisy. and it come to a lot of power and generates a lot of heath to see how the center manages this. it's a quick write down the corridor. oh. where in the future road this is where all the gray energy flows through into the data. all. so this is basically the giant engine of this data center. the consumption in this data center with all the different data holes,

consumes the power equal to about 20000 household. while this may seem a lot, some of the biggest data centers consume as much power as the city of a 1000000 people. every click you do on your device, generate humidity in 5 data center, summer. if it's in norway, it's green and renewable as well. so only using green energy this data center is reducing its impact on the environment by cooling its service using cold water from the nearby deep salt water inlet of yard. so while most data centers use around 40 percent of the energy to cool servers, which would otherwise reach a 100 degrees celsius in minutes, this data center get his cooling free from nature. if it were producing the cold water use to cool the cloud, a 5 most cold sea water from the fuel into the base. and next to the data

center, this water, which is constantly 8 degrees celsius, is then pumped up through the heat exchanger cooling down separate water pipes that circulate through the data center. the warmed up cbl to then exits back into the fjord at around 20 degrees celsius, where quickly cools down again. the green mountain data center no way is unique because of the fuel cooling the servers. and the way in which they've repurposed an old site. but all over scandinavia tick giants like facebook, google and microsoft are building huge data centers running on hydro and wind power . in fact, investment in nordic data centers is set to double by 2025. well, thank you or be both fully electric. i'm meeting theory kelvin, a local matri ologist in green investor who's confident this trend will continue. so this is where the hydropower is. yes, the over the flu, the hydro station,

it's actually the world's longest. $4444.00 step over a 100 there. so, be careful, though, i can see that it's old from this old train here. here you see the old pipe coming down from the mountain. so all the water's just flowing high speed in the pi, creating electricity when they hit the turbine. so you have to use what nature gives us. so in norway we have incredible rain or the concrete have sun. yeah, we also have wind, but here it's rain that gives us the electricity. scandinavia will be important to the world's data storage. i think scandinavia will be very important for future data storage. it's a cold climate if you can use the cold fjords to cool down the data center. we have

the hydro poll were to run data centers. however, i think we also need to be even more responsible and take action the each one of us . and for instance, if we are talking on both data storage, we need to be concerned about how many celsius we need to take home. many e mail, some snaps and text message. we need to send the me though, we can't see it. our use of digital devices has an impact on the well it around us . this is only fit to grow. nearly 60 percent of the wealth population is already online and around $1000000.00 new uses sign up each day. as our reliance and data expand, we need to find greenway to manage it. here in no way, i've seen how this can be done. and i think we really need to learn from examples like this and make sure that we balance our modern lives with what the planet can sustain, ah,

which so many of us stuck time during the pans that make it perhaps hard to see that the world really has been given a golden opportunity for green recovery commitments are happening all over the place as nations businesses, cities, investors met 0 cob and targets by 2015. but right now the 21st is the key. yeah. that's just under a decade to determine the future of the planet around the world who already think glimpse of the green society the could be hours last year, renewables over to fossil fuels as a main source of electricity in europe. a new case in australia to the solar panels on rooftops, one in for hime, the nor was that solar complex and morocco. so it's 1st phase and it's already producing enough energy to power the city of my ra cache twice over 60 percent of month because cells and know what are electric diesel cars will be banned there in 2025. the solutions are already bad. they just need to go global, make

a real difference, ought to have shown that the clean, green and prosper future. ah, it's been meet the young river traders, brazil. they can either read nor run that they know how to code their breathing dangerous again with their he'll do anything just to christine, you know when else when you break on wednesday, it was the 8th largest fire in california history. when people need to be home,

many people who are arriving even know what i am with exclusive interviews for horse sierra had teams on the ground with intensifying rain. people here appear that these are temporary solutions to bring you willing document trees and light. the mocking 20 years since the deadliest attack on us soil, sombre ceremonies. i held to remember the victim of the 911 attack. ah, i haven't think of this is agitated. i live from the also coming up bearing the scars of the us led war in afghanistan. we hear from people there whose lives

changed forever almost 30 years after he was captured, the man.