wagner fighters have left the southern city of rostov, where they took control early saturday. all road restrictions have now been lifted. the mercenaries have been told they will not be prosecuted and will be allowed to join the russian army. there have been reports of an explosion overnight near the ukrainian city of zaporizhzhia. it is the site of europe's largest nuclear power plant. the ukrainian army has launched a counter—offensive in the area to take back the territory the russians captured last year. now on bbc news, click.

this week, we're diving into the world of artificial reefs. the advantage to this is you can take all of the best qualities of a natural reef and you can exaggerate them, completely. the robots have come to town. and paul finds out how old bangers are being given an afterlife. it's an engine ina dishwasher... 'course it is! our oceans and the marine life they support are under threat. climate change is causing them to warm at record levels and as the seas absorb more co2 they also become more acidic. and that as well as other man—made damage like trawling for fish can

have a devastating impact on important habitats like reefs, but can technology offer a solution? well, adrian murray has been finding out about some conservation efforts to help bring back marine life in two very different parts of the world, starting in denmark. just off the island of samso, plans are under way to build an artificial reef, and i'm about to join a group of researchers on the water for a closer look. ready to go out. so we're now approaching the future reef site out here. the rocky reefs in denmark's cold waters are home to fish, seaweeds and other species. however, an area equivalent to almost 8,000 football pitches has disappeared. a lot of rocks have been removed from the seabed over the 20th century, mainly for the construction of harbours. without this essential habitat, basically a whole ecosystem's been lost

and without active human intervention we don't expect these habitats to restore. the team are installing cameras at hundreds of different spots on the seabed along this stretch of coast. we're heading out to one of the locations where there's an underwater camera and over the next several weeks, the researchers are going to be gathering thousands of minutes of underwater footage which they're going to analyse to see how much biodiversity is out there. this handy qr code programs the cameras to record for two minutes each hour. sets the camera to the right resolution, the right frame rate, and also it sets down the camera for the other 58 minutes in the hour and this allows us to record throughout the day. in reality, they don't expect to find very much but as the new reef is built with thousands of boulders, they'll monitor again

and hope to show marine life is bouncing back. the idea here is to tackle two issues in one go — both marine conservation and protecting the shoreline from erosion. a growing problem in the face of climate change. so computer modelling is working out the reefs best position and height by simulating waves, currents and how it affects the flow of sand. what we see at the moment and what many communities are also worried about is that with climate change, we will see an increase in the frequency of storms in the future as well as rising sea levels and we need to prepare for this especially in low—lying countries. there's now a wider push to replace the 55 square kilometres of denmark's lost reefs. a lot of what used to be natural habitats out here is missing and so that's why there's now this new dawn of restoration and reefs are just one of the most important things to restore.

elsewhere, new marine habitats are being created with 3d printing and by using specially moulded concrete in bigger infrastructure. at this danish wind farm, stone and 3d printed reefs have been placed on the sea floor. the advantage to this is you can take all of the best qualities of a natural reef and you can exaggerate them, completely. algae, other organisms, need a hard substrate, a hard surface to attach themselves to so you can maximise surface, you can 3d print the structures so that they have passageways and hollows. i mean, literally moments after they were placed on the sea floor, the video shows that marine life just moved in. farfrom denmark, a firm in australia is putting automation at the heart

of efforts to restore reefs. spectacular coral reefs like these found in more tropical waters are home to a vast array of marine life and are crucial to the livelihoods of millions of people. yet, some scientists predict they could be wiped out in just a few decades. after witnessing coral bleaching, marine biologist taryn foster launched her start—up coral maker. coral reefs are being hit by this global challenge which is climate change so we're having consecutive years of record—breaking ocean temperatures. coral grow very slowly, while restoration efforts involve painstaking manual work. so, the australian firm has turned to automation and robotics to quickly scale it up. corals make their own skeletons out of limestones.

we're using a technique in the masonry manufacturing industry that can mass—produce about 10,000 of these skeletons per day. our new model is basically a flat disc with a handle for the diver. i wanted to make these very complex shapes. but then i realise fairly soon into it that 3d printing is way slower and way more costly than what we need. by providing this premade skeleton and then seeding it with the little pieces of coral, is we're bypassing several years of calcification growth. american partner autodesk is helping train a robotic arm. these processes of coral propagation are just pick and place tasks, quite repetitive, and they're ideally suited to robotic automation. we have been working on using robotics that are ai driven so that means that they use their vision systems to look at what they're going to pick up and then make decisions on how they are going to grab it.

in the coming months, tests will move beyond the lab into the real world where the technology will need to work living corals in tougher seagoing conditions. they're also going to be working with corals that have just come out of seawater so they're going to be wet and it's going to be possibly on a moving environment if the robot is working on a vessel. and if all that goes to plan, it's hoped to give coral reefs and the marine life they support a better chance of survival. now, as technology to tackle the climate crisis evolves, it's attracting a lot of attention including that of former formula i champion nico rosberg. now a green tech investor he's founded the greentech festival in berlin where alisdair keane caught up with him. just describe to us the festival and where we are. greentech festival is europe's biggest attainability event now and it's actually a global

series — we're in berlin, we've done london, we're doing la, singapore, and it's all about leading innovation and bringing it all together here and the people behind that also, so we have politicians, we have scientists, we have start—ups, ngos, business, ceos, everybody�*s coming together here to form partnerships, deals, and also to inspire. we want to reach many, many people to inspire people also on this movement. what's your motivation for putting this on? my motivation was that i want to contribute with what i'm doing as an entrepreneur and i saw a space here where it was lacking, this sustainability event in europe, so i said hey, let's do it, it's a big opportunity. was there a moment for you when the climate crisis came into vision and you decided to focus on that? it's not one moment, it's a process. and also i'm coming from the angle that i love this tech innovation, that's what fascinates me, and the opportunity

that there is now for innovation to have this positive impact, you know, that's a lovely combination, so that's my angle that i'm coming from and it starts with mobility. we can make mobility a lot more efficient, a lot more sustainable and beyond there, there's food innovation, there's property innovation, so much is happening — also artificial intelligence now. it's going to be huge for sustainability because it's going to make everything so much more efficient. what are you looking for when you're trying to find a company to invest in? i look for, first of all, founder competences and founding team competence, are they complimentary, because it's all about the founders essentially. if they're brilliant but the idea is not, they'll pivot the idea until it becomes something brilliant, so that's important. then of course the potential for impact. i really like that. a company that can really, like, transform at a large—scale, that's awesome. it also needs

to really capture me in a way that excites me to join the journey. that's also important. and the market opportunity essentially has to be there. one has to be able to visualise a potential market opportunity. you made your money and your name in f1. that's a sport with a huge carbon footprint, travelling the world, petrol engines. is a bit guilt in you deciding to focus on the climate crisis? no, not at all, i'm really proud of my sporting success, it was a wonderfuljourney, i achieved my dream and now in my second life this is the new path that i'm taking which is very fulfilling, you know, and i'm very happy to be on this path of contributing and it's not as a result of some guilt or something. in europe, we're experiencing actually the most extreme climate changes. so flooding, drought, europe is actually the continent that's being hit amongst the worst, so it's really close to home now and should be quite alarming that we alljoin and be a part of this.

would you say now having spent so much time in green tech you're confident about the direction towards tackling the climate crisis or do you still have worries? well, none of us can be confident. i can see a lot of reason to be optimistic, yes, when i see the spirit here at our event and even the amount of attention we have from the government here for our event and how they're contributing, attending, that is also very reassuring. and finally, the young generation, that gives me the most hope. and i see my daughterjust yesterday, or two days ago, she runs back into the ocean to pick out plastic because she saw it when she was swimming, throws it away, i didn't say anything but she wants to save the turtles. so that's lovely to see how committed they are to this and that can give us a lot of hope.

0k, time for a look at this week's tech news now. cryptocurrency boss do kwon has been sentenced to four months injail in montenegro. in february, do kwon was charged with orchestrating a $40 billion crypto asset securities fraud after the collapse of terrausd and luna tokens. students in switzerland have developed a haptic suit that enables more interaction with virtual reality. the meta—suit has artificial muscles which measure a person's movements without the need for camera systems. it was such an amazing feeling which was something i never felt before. you're in an entirely other environment. you could be a norse. tesla's ceo elon musk has said that the electric car maker will be in india as soon humanly possible after a meeting with the indian prime minister narendra modi. the indian government said it had invited mr musk to explore investment opportunities in electric mobility and the commercial

space sector. and finally, whatsapp�*s latest feature allows incoming calls to be automatically muted if they're from an unknown number. the feature has been introduced after an uptick of reported scam calls. you can activate the feature in your privacy settings. robots that walk, robots that grab things, even robots that swim, the icra or international conference on robotics and automation took place in london. it was packed with machines capable of all manner of automated activity. nobody told me i was coming to a robotic version of crufts. now, ai might be grabbing hold of all the headlines right now but for the exhibitors at this show, it's nothing new. that's because artificial intelligence is at the heart of pretty much every robot that's here.

they're very well trained doggies! a good example of ai and robotic co—operation comes courtesy of uk company 0xa. it's creating software with al roots, allowing autonomous vehicles like shuttle buses and mining offroaders to navigate the world around them. but when we look at the wider world at the moment, especially things like tech, there are big concerns about the effect of technologies like artificial intelligence on the workplace. there was going to be change injobs, the vehicles for our autonomous shuttles, they would have supervisors, they may be remote, you may have people in parts of the country that doesn't have great opportunities helping solve traffic problems in the clogged south because the vehicle drivers and operators no longer need to be in the vehicles. so the issue here is how do we skill ourselves? one of the most controversial applications of robotic and ai tech is in defence. ai pioneer yoshua bengio recently warned of the potential dangers of the misuse of the technology. shield ai builds artificial

platforms for defence. it's working on assisted project for us air force f—16 pilots, as well as autonomous aircraft like this, called the vbat, and small drones and quadcopters. we have deployed ai capabilities since 2018. they are currently used by the american special forces units, so unfortunately we cannot talk much about the application. contemporary drones�* ability to fire weapons is controlled by human operators. could ai technology one day lead to these machines making the decision to destroy targets by themselves? the us department of defence has outlined a very strict ethical principle around ai, and one of those is about having governance and responsible use of those mechanisms, and so i don't see a world where we don't have humans at least observing and interacting with these systems to make those decisions. putting visions of apocalyptic

automota aside, these technologies could help the planet too. the hydrus diving robot from australian company advanced navigation can be used to capture data and survey undersea installations, as well as gather information on environmental issues. the ocean plays a major part in climate change, absorbing up to 60% of the carbon dioxide that we generate, so understanding more about what is going on in the ocean is critical to climate change. away from autonomous machines, there are plenty of human controlled droids on display, like ergocub from the italian institute of technology. this robot is controlled by an operator 650 miles away in genoa, italy. now that isn't the robot waving back at me, that's actually somebody who is in genoa controlling the robot via telepresence. they have a vr headset and controllers on their hands, and it demonstrates the kind of

capabilities of telepresence. machines like this could used in environments where it might be unpleasant or hazardous to human beings. ew! i can test drive telepresence thanks to ix, norwegian company backed by open ai of chat gpt fame, but my test drive will come with human handler though, making sure i don't damage their robot. this robot here is called eve. when i pop on this headset, grab hold of the handset, i'll be in control. now when the headset is on i can see through eve's eyes. at the moment these robots are being used as security guards and are being tested out in the united states. up to eight of these can be patrolling a space while one guard sits in the control centre. if something happens that requires human interaction or further inspection, they can put on the headset,

take control of any one of the robots that will be patrolling the space. it could be a human being with very little physical strength, and yet you can take control of a machine which could be many, many times stronger than you, or many, many times stronger than an ordinary human. incoming robot gag cliche — of course, these particular droids can be undone by the dummy age old enemy, a flight of stairs. that was mark. now we all know how bad cars are for the environment, and that doesn'tjust mean when they are being driven. even if you go electric, that doesn't completely solve the problem. all cars have an environmental impact when they're being made, and when they no longer work, they're scrapped — but maybe they don't need to be, as paul carter has been finding out.

now we're all familiar with production lines in factories, but here is something a little bit different. this is a de—production line and it can dismantle entire cars from scratch down to its component parts injust over one hour, and i'm here to follow one car on its end—of—life journey. here at the uk's most advanced reverse production line facility, 120 cars are received daily, to be deconstructed, packed and purchased online within hours. it's an engine in a dishwasher! of course it is.

using a 13—step process, the company aims to recirculate as much as possible back into the economy. this even includes draining fluids, such as oil and petrol, which is resold to staff at a discounted price. and robotic arms help the the mechanics strip the car for specified parts. that eventually goes into a box and goes to the warehouses and they're resold, either on the internet or through our front counters. the re—manufactured parts go back to the re—manufacturers. the remaining parts gets recycled, so we basically recycle a car to a greater than 95% of its body weight. not only is this whole facility operated by solar power, but also that solar energy operates our forklift trucks, our electric bailer, which crushes the vehicles, and the company is in a transition of moving into 100% electric.

as consumer interest in sustainability grows, there's likely to be increasing demand for reused parts like this one, rather than purely recycled ones. and as you can see from the scale of this facility, there's already quite a lot of it. 0ne barrier people face is being sure of the quality of reused parts. as ebay is one of the largest online automotive marketplaces, it has partnered up with industry bodies to develop the vehicle recycler certification to help consumers buy in confidence. the big thing is it's completely independent of the industry, so it's an outside body looking at it. what it is as a verification that you operate to a certain standard.

it was developed because we needed to have more professionalism in the industry. by knowing where that part, that secondhand part came from, and also ensuring it's not a stolen part, gives the insurance company satisfaction that they can fit that part. we do have an appalling situation with part shortages in general. many cars are off the road for a long time waiting for parts, and if a secondhand part, a recycled, green part part is available immediately, why not have that fitted and get yourself back on the road quickly? last month, ebay relaunched their certified portal, featuring certified recyclers like charles trent to make it easy for people to find same quality parts as the ones their cars were sold with. there are 2,500 what we call auto—treatment facilities in the uk, not all of those are specialising in actually removing the parts from the vehicle, manyjust scrap the cars and sell it for metal value. charles trent are really super focused on removing as many

parts as they can from every single car. they see a big volume coming through, and then for customers who can't necessarily afford to buy brand—new parts to keep their cars on the road, but they really need to be able to get their kids to school, these types of parts allow them an opportunity to keep their cars running. as consumer attitudes towards the secondhand market are changing, so is the industry. instead of being the sort of place where cars come to die, facilities like this one are giving them a new lease of life. that was paul. has he got himself a part—timejob there? it looked like it to me. he does often seem to be in a warehouse... anyway, that's all we've got time for. yeah, thanks for watching, we'll see you soon. bye.

hello. a hot night out there, very humid indoors, too, after what was a hot day. on saturday in the south—east of england, temperatures hit 29 degrees celsius and sunday is going to be hotter still. again, humid for many of us and there's a chance of storms, particularly across northern parts of the uk. now, some of the storms could be pretty nasty with frequent lightning, hail and gusty winds. this is what's happening right now. there is a cold frontjust to the west of our neighbourhood. it is going to sweep in some fresher conditions but ahead of it, we've got that plume of heat and also moisture, that humidity coming in from the southern climes, so there is a change on the way. this is what it looks like early in the morning on sunday, those temperatures still holding around the high teens. this is where the weather front is. it's ready to sweep

across the uk. not everybody�*s going to get the rain. the rain will fall in northern ireland during the morning, then the skies will brighten up and it'll be a fresh afternoon. and then, that rain will reach scotland and parts of northern england. there'll be a few showers in wales, too, but it's across northern and eastern scotland, the north—east of england and all the way down to lincolnshire — this is where we're likely to see the heaviest downpours with the hail and the gusty winds as well. south of that, that's where we'll have the heat and humidity. in london and the south—east, temperatures could hit 32 degrees celsius but for the west, it's going to be fresher — plymouth, 23, about that in cardiff, and i think a very pleasant 19 degrees celsius in belfast in the sunny spells and maybe the odd shower. and during the course of sunday evening, still some showers there across parts of scotland and northern england but for many of us, a very pleasant end to the day. let's have a look at monday now. we're sort of in between weather systems. 0ne weather front clears away,

another one waiting in the wings out towards the west of the uk. so, the morning starts off sunny on monday. through the course of the afternoon, clouds will bubble up. there'll be a few showers here and there, particularly across northern parts of the uk but, essentially, a very pleasant day — a lot fresher, too. you really will notice the difference across many parts of england. in london, from the 32 degrees, more like 23 degrees celsius. and if we have a look at the weather for the week ahead, you can see the weather is looking a little bit mixed every now and then but still pretty warm in the south — temperatures low or mid 20s. the high teens expected further north. bye— bye.

of civil conflict, good morning, welcome to breakfast with ben thompson and sarah campbell. 0ur headlines today: and sarah campbell. 0ur headlines today: rebellion to retreat — rebellion to retreat — a stand off between the kremlin a stand off between the kremlin

and mercenary forces, and mercenary forces, which brought russia which brought russia close to the brink close to the brink of civil conflict,