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 heights 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 the 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 to restore.

elsewhere, new marine habitats are being created with sd printing and by using specially moulded concrete in bigger infrastructure. at this danish wind farm, stone and 3d printed roofs 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 needed like 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. 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 one champion nico rosberg. now green tech investor, he's founded the green tech festival in berlin where alister keane caught up with him. just describe to us the festival and where we are. greentech festival is europe's biggest sustainability 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 really it's all about i mean, it's the leading innovation and bringing it all together here and the people behind that also. so we have politicians, we have scientists, we have startups, 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 the sustainability event in europe. and 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 i'm 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, a lot more sustainable. and beyond there, i mean, there's food innovation, there's property innovation, there's 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. you made your money and your name in f1. that's a sport of a huge carbon footprint, travelling the world, petrol engines. is it a bit of guilt

and you're 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 the honest path of contributing. and it's not as a result of some guilt or something. 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 though the amount of attention we have from the government here for our event and the how they're contributing attending, that's also very reassuring. now, we all know how bad cars are for the environment, and that doesn'tjust mean when they're 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's been finding out.

now we're all familiar with production lines in factories, but here is something a little bit different. this is a deproduction 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 lifejourney. 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 the dishwasher, of course, it is. eventually going into the box and go to the warehouses and they're resold either on the internet or through our front counters. the remanufactured parts go straight back to the manufacturers, the remainder of the body shall the non—ferrous metals gets recycled. so we basically recycle a car to a greater than 95% of its body weight. 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. but one 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 recyclers association 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 and what it is. it's a verification that you operate to a certain standard. last month, ebay relaunched their certified recycled 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's two and a half thousand, what we call auto treatment facilities in the uk. not all of those will specialise in actually removing the parts from the vehicle. a lot of them willjust scrap the cars and sell it for metal value. charles trent, who actually are really superfocused on removing as many parts as they can from every single car. we see a big volume coming

through the facilities like charles trent. and then for customers who, you know, can't necessarily afford to buy brand new parts to keep their cars on their 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 second—hand market are changing, so is the industry. and instead of being the sort of place where cars come to die. facilities like this one are giving them a new lease of life. and that's it for the short version of the programme. full length show can be found on iplayer. yeah. thanks for watching. we'll see you soon. bye.

hello. after what's been another fairly warm week for many of us, the weekend is set to bring something even warmer. in fact, i think the days at times will feel quite hot and the nights will be very warm and humid as well. but as we head into sunday, we are going to see a bit of a change. some thundery downpours swinging in from the west courtesy of a frontal system which is a long way away to the west of us right now, for the short term, high pressure is just about in charge. and around this area of high pressure, particularly as these weather fronts squeeze in, we've got a feed of humid air wafting its way across our shores. so quite a warm and humid start to saturday morning with a fair amount of cloud actually, and some mist and murk around some of the coasts and over some of the hills. a lot of the cloud will tend to break through the day to give some spells of sunshine, a bit of rain moving across the far north west of scotland. there's a small chance for the odd shower in parts of northern england, down into the midlands,

but wales in the south of england likely to see the lion's share of the sunshine. and wherever you are it is going to be a warm day. 2a degrees for belfast, 25 for aberdeen, 29, the expected high in london. and that warmth does not ebb away quickly as we head into the evening. in fact, temperatures holding up at around 23 degrees in london and in sheffield at 10:00 in the evening. so it could well be a little bit uncomfortable for sleeping. those temperatures falling a little bit further into the early hours of sunday. but with the humid air in place, sunday is going to turn into another very warm day. however, this frontal system pushing in from the west will bring a change for some of us with a band of heavy, thundery rain already in place across northern ireland. first thing that will push its way eastwards and ahead of it, some showers will pop up across parts of northern england, eastern scotland. these could be heavy and thundery in nature, but further south and particularly further southeast, it should stay largely dry with lots of sunshine and that warmth being squashed into the southeast corner. so temperatures in london likely to get to 31 degrees, butjust i9

for belfast, fresher in the west. and that fresher air will move across all parts of the country as we move into the start of the new week. there are, though, furtherfrontal systems lying in wait, so we will see further outbreaks of rain at times and potentially some quite strong winds as well, particularly towards the north and the west of the uk. not as much rain further south and it is not going to be as warm as it has been.

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