a lot of what we have come up with is plant—based because we know turning the us house of to a vegan diet is simply representatives has approved an emergency bill the most sustainable thing to inject $25 billion into the postal service, you can do as an individual. besides that, we need some protein. there we have explored everything from insects, and to put operational not only because they are environmentally friendly changes in place. but also because they are delicious. we have explored democrats are concerned microality, orspirulina. the trump administration may try to disenfranchise the only challenge with millions of americans spirulina is that it who choose to vote tastes like algae. time for a taste. by mail in november. you like it? it doesn't taste like a normal nato has dismissed hot dog but it tastes claims by the president of belarus of a troop buildup a lot better. on its border as baseless. nato said it posed no threat to belarus or any other country. i would never be eating alexander lukashenko has been a normal hot dog. facing mass protests since claiming victory the flavour of all the sauces — in a contested presidential election earlier this month. there are so many different tastes in there and are all quite intense. president trump has 0k. approved california's request to declare the huge wildfires scorching parts of the state it's a bit messy eating as a major disaster. on camera but beyond the ingredients, ikea it means federal funds will be is also hoping to reduce available to help victims its carbon footprint. of the fires. introducing hydroponic farming in all stores. this method creates the perfect at least six people have been killed environment for growing plants and tens of thousands using their food waste as fertiliser. have fled the area. but we can all be getting a bit more creative with our waste, it seems. ta ke leftover grou nd now on bbc news, it's time for click. coffee for a start.

this week — a mountain because you only use 1% of energy, a solar sea, of the nutrients in the coffee grounds when you make a cup and some rather unusual food. of coffee, we use some of our coffee grounds for shortbreads and others for growing oyster mushrooms. any caffeine in them? will they keep you awake? i actually don't know. i don't believe so. that's it from us and a look back at our sustainable favourites, and a reminder that tech really can change the world. next week we'll give hey, welcome to click. you another chance to look at some of our other i hope you're doing 0k. recent adventures. in the meantime, you can catch us on social media and youtube, i don't know about you but this year has felt really quite facebook, instagram and twitter @bbc click. thanks for watching long so far. we live in a world which is unrecognisable from even six months ago and it's clear that we still have big problems to face. but let's not forget the global and we'll see you soon. issues we were talking about even before the pandemic, particularly climate change. possibly one silver

lining from all of this is the reminder that tech can and does solve some of our biggest problems. hello there. at the moment, the weather doesn't feel much like late summer. on click, we've been lucky over the weekend so far enough to see some amazing we have seen a mixture of sunshine and showers. tech, tech that can i'm sure rain has stopped change the world play now and again and even revolutionise it. across the country. we thought we'd share with you some of our favourites from the past couple of years. we start, where else and we've got more showers but in wales? to come during the second half of the weekend. the big cricket match of course is taking place at southampton. england on top, hoping for some more wickets. and generally speaking, the day should be dry. there aren't going to be many the beautiful welsh countryside, home to valleys, showers across this part lakes, the odd feral of the country. goat, and... and many places will start sunday dry with some sunshine. ..electric mountain! soon getting showers, though, coming into northern ireland, hidden inside this mountain and perhaps spilling now into southern scotland, is the dinorwig pumped storage northern england, moving power station, and it is into the midlands and in the afternoon down basically a monster battery. towards the south—east. some of those showers could be it stores energy by pumping heavy, possibly thundery. more sunshine for wales water from the lake to a lake and the south—west, the winds will be lighter on sunday,

at the top of the mountain, turning north—westerly in scotland, but there should and then letting it flow back be very few showers away downhill, releasing that energy from the far south. but it will be quite cool at times of peak demand. see, when you pop the kettle on during breaks in air here, temperatures championship matches of that sport they call football, only 14—16 degrees. we could make 22 or 23 this bad boy springs in the south—east ahead into action to supplement of those heavy showers. oui’ those will move away fairly quickly in the evening, our national grid, delivering linger a little bit longer power to our homes in across northern england under 12 seconds. and then later in the night, we'll see some rain coming it's an incredible view. into wales and the south—west, but some clearer spells it's one of the fastest elsewhere. responding power stations a little bit cooler, though, on the planet, and will have i think, by monday morning, a nosy inside the thing later in the programme. particularly in scotland. and quite chilly, actually, in the glens of scotland for this time of year. dinorwig offers a semi—renewable energy monday's a messy day, solution at a time i think we've got more cloud, when our natural resources some patchy rain in the morning are being used up. moving eastwards across england and wales and then some sunny as solar, wind and tidal power spells, a few showers around alternatives advance, here and there. we are craving a method of using their generated energy 21w, despite the weather or time of day. the winds will be this is where quite light on monday. again, temperatures may be batteries come in. making 17 in the central belt now, this isn't your of scotland to a high of 21 in the south—east of england.

stereotypical battery. a fairly quiet day, but the changes overnight into tuesday, perhaps admittedly, when i say battery, lingering into wednesday. you probably think of the ones we've got more gales arriving across the uk, in these — these are particularly in the south, rechargeable lithium ion batteries. and this is where we're more likely to have some further we really can't live trouble disruption. another dose of wet and very without these. windy weather, unusually windy lithium ion batteries have for the time of year as a deep truly revolutionised area of low pressure again electronics — they power sweeps its way across the uk. the mobile miracles rain arriving overnight, that we use every day. the winds picking up by the morning in the south—west in particular, blowing that rain northwards, they have a high density, probably not reaching northern meaning that they can store scotland. away from here, though, the winds really picking up, a lot of electricity relative particularly across wales, to their small size, the midlands, southern england, so we can easily carry them gusts of 50, perhaps even 60mph around and recharge them around some of exposed coastal areas, too. hundreds of times. a very bumpy ride again on tuesday, temperatures inside cells are layers probably don't mean a great of sheets stacked together, a positive cathode, a negative anode, with a separator in between filled with deal in that rain, it's a liquid electrolyte. when a cell is charged, the movement of ions from one side to another facilitates the flow of electrons, which then generates current to power devices. during charging, this process is reversed.

but the search is on for cleaner, greener forms of energy. for that, lara sailed to a very special island just off norway. we have travelled west now to norway. it is so calm here, it's absolutely beautiful, but not far from here the waves can reach up to three metres, and that's where we are heading, because we are going to take a look at an island which is made up of solar panels, and the idea is that they need to fare 0k whatever the weather. oh, thank you! i've made it! aw, we're walking on water! these certainly are not the first floating solar panels, but the innovation

being tested here is the fabric itself, creating a cost—effective, weather—resistant material that could easily be scaled. there is talk of a set up near the equator the size of a football pitch. this has been designed to withstand wind, rain and ice. around the edges, these barriers prevent any sea water from getting in. so whilst you can see i'm standing in a pretty large puddle right now, that's from last night's rain. what i'm actually standing on is less than one millimetre thick, it's quite hard to stay balanced. it's made from polyester coated in a polymer. what makes this polymer special is how lightweight yet strong it is, meaning it's ideal for this type of installation. this is bbc news. in the not—too—distant future, welcome if you're watching here in the uk or around the globe. we think we can build systems that are comparable i'm james reynolds. with the so—called ground our top stories: mounds installations on land. the us house of representatives votes to pass an emergency bill to inject $25 billion that will be a big breakthrough into america's cash—strapped postal service.

for floatable sites, lithuania and poland deny because then you suddenly claims that nato is building have large surface areas up its forces along where you can build cheap their borders with belarus. renewable energy are very close president trump declares to large consumer groups. california's wildfires a major disaster, granting federal funds to victims who've lost their homes. and making use ofjust a fraction of the sea's vast surface area, as well as taking advantage of the water's tiktok takes ability to keep the panels cool on the us government: the chinese company means that the scaling of this behind the social media app plans to sue over its ban. does seem plausible. football's biggest club trophy‘s up for grabs later on sunday, but there'll be no supporters in the stands the solar power being to cheer on the harnessed is being used here on this fish farm. champion's league winners. the island has been developed to be the exact right size to harness the right amount of power in the summertime, assuming that the weather is good. the rest of the year it's running on diesel, so obviously you can see the environmental benefits of this. but the suggestion is, that an island this size, if anchored in the london area could power 20 average uk homes. make the island the size of a football pitch, and that could rise to 200.

but of course the investment needed is huge, so moving forward on this could prove more complicated than the proof of concept. back at dinorwig, i'm heading deeper underground. the water comes from the lake, which is about 600 metres above us, down this pipe, hits this valve, and stops. this is the biggest tap you will ever see, and there are actually six of them all in a row down there. when they need the power, this yellow arm swings up, the valve opens, and we get the maximum flow of water through the turbines there in about six seconds.

when all six are open, that's 92,000 gallons per second, or as it says here, 1.5 million cups of tea. i'm not sure if that earl grey or english breakfast, mind. do we have flow? we have flow. and there it is — turbine number two spinning at about 500 rpm. when all six of these turbines are all spinning, this place produces enough electricity to power the whole of wales for five and a half hours. now, dinorwig runs at about 75% efficiency because it pumps its water uphill at night using cheap electricity it buys from the national grid, and charges a premium for the energy it generates during the day. if we were to move completely away from fossil fuel power stations, would that mean this sort of power station would not be able to run? in reality, if we need to pump

that water up the hill, we have got to go and buy the electricity from the market somewhere, whether that is a thermal power station, a set of windmills, gas power station, whatever it might be. why are there not more of these around? i suppose the greatest challenge is finding a suitable place in the uk to build them. you have seen yourself that you have got to have them in a specific area, it has got to have two lakes, ideally, reasonably close together, good vertical separation. they are not the kind of things that you can easily build on the back of a wagon and wheel in somewhere. the lakes need to exist or you need to create them so it comes at a cost. i think it's just a limited amount of options for locations. does it get a bit lonely down here? sometimes! hello, and welcome to the week in tech. it was the week that president donald trump joined

tiktok‘s rival app, new york—based, triller, gaining 11,000 followers and his first few days. a decision to award a—level students‘ final grades on the basis of an algorithm was reversed by the uk government following protests. apple became the most successful us company ever, with over $2 trillion. worth over $2 trillion. it was also the week that scientists at the university of delaware said that they developed a coding that can ease the interface between humans and ai. the new material is a type of polymer known as pedot. it could help create future cyborgs by more easily connecting electronics to human tissue. a team of researchers at the university of michigan has revealed a new rechargeable zinc battery that could provide energy to robots in a similar way to a human‘s fat cells. the new design will help build capacity in robots as they become smaller and will help in applications like drones. an autonomous boat has completed a 22—day mission mapping a part of the sea floor of the atlantic ocean. the 12—metre long uncrewed surface vessel was skippered from a base in eastern england

and the mission was part funded by the european space agency. finally, how handy would it be to have a chameleon tongue—like snatcher to reach all those far away objects? this robot has been developed by a team at seoultech to help collect items without getting too close. the tongue works fast and can snatch up to 30g from 80cm away in under 600 milliseconds. i want to share with you a fact that i hadn't fully understood until i met climate scientist ed hawkins last year. now i'd known our weather was getting worse and our sea levels were rising and i'd known that global warming was happening because we are emitting carbon dioxide and methane into the air at a runaway rate. what i hadn't fully understood is this, simply reducing greenhouse gas

emissions will not bring global warming under control. in order to stop global warming, we need to do something very drastic indeed. if we end up in a world where our emissions are net zero, we're not increasing the amount of carbon dioxide in the atmosphere any more — that will stabilise global temperatures at the point at which we do that. it's not realistic? to reduce global temperatures, we would need to somehow remove carbon dioxide from the atmosphere. there are already ways of capturing c02 at source, on its way out of power stations for example. this doesn't get it all by any means. what you need is something to pull c02 back out of the air. what you need is something like this. it's called

the artificial tree. the air passes through these filters, which are made of a very special material because c02 actually clings to this material as the air passes over it. once these filters are saturated with carbon dioxide, this whole thing moves down into a container of water where this particular material releases the c02 into a sealed container and then, congratulations, you captured yourself some c02 from the air. this is the brainchild of klaus lackner, here at the negative emissions centre at arizona state university. we realised this was a waste management problem. we are dumping c02 into the atmosphere and it stays there. it was very clear to me in the early—90s that sometime in the 21st century we will have to stop emitting. klaus was the first scientist back in 1999 to publish a scientific paper suggesting carbon capture from the air

was a feasible way of combating climate change. the problem was, no—one seemed to be listening. if you look at the climate change problem, in the ‘90s, we had models that told us it was happening. you couldn't really see it out in the real world, except with a microscope. in the 2000s, you could measure it — it was happening. in the teens, now, you can see it happen, even as a non—expert. climate has changed. in the next decade, as it grows out of the noise it becomes loud and clear and starts to hurt. once it hurts, people will say, "now what do we do about it?" klaus argues since we're facing to meet our targets for lowering co2 emissions, carbon capture from the air is now unavoidable. now people are listening. his technology has recently received commercial investment. we have put so much c02

in the air, we actually have to come back, so we call ourselves the centre for negative carbon emissions because we actually are thinking about having a period in this century in which we will have to take 100 ppm back. now that's more c02 than the world emitted in the 20th century. how many of these do you think we would need? a lot. now, these are very small, but go to the size of a shipping container. if you wanted to actually match current emissions, you would need 100 million of them. now, these are bigger than that. 100 million sounds like a horribly large number, until you start deconstructing it. we build 80 million cars. shangai harbour is sending out about 30 million full shipping containers. i would argue, as far as industrial scale goes, this is large but not

outrageously large. making that piece was fascinating. it helped me to think about the different approaches we can take in tackling the different aspects of climate change. as well as removing our emissions from the air and using greener energy techniques, we can of course reduce the energy that we use and reduce the emissions produced by certain industries. one of the big ones is agriculture and meat production and over the past few months, both kate and lara had been looking at alternatives to the food that we eat. at beyond meat, in la, they have designed the next generation of meat substitute by analysing it at a cellular level. they then went hunting through the plant kingdom for enzymes, fats and proteins that behave in the same way as the elements of the meat. in this case, extracted

from peas, potatoes and with beetroot for blood. i know it's not meat, i'm going to taste it soon butjust from thejuice, it feels like a burger. as well as the visual appeal, scientists here use an e—nose to examine the components of an aroma, so they can be mimicked in the lab. going to do it the way you do a burger, straight on in. it is oozing my fingers. it's dripping down my hands and oozing in a very burger—like way. look at the amount of water we use. we use 99% less water. if you look at the energy we use, we use half the energy. if you look at the emissions that we provide, about 90% fewer emissions.

lastly, on land, an important one for the farmer, we use 93% less land. so if you're a farmer with 100 acres, you can now gi’ow on seven acres what you used to use all 100 for. there is still one major drawback for your average meat loving family. where a pack of fresh beef burgers might be priced around £11.40 per kilogram, the beyond meat alternative is currently around £24 for the same weight. this burger substitute is 100% vegan, but while vegetable substitutes struggle to recreate the effect of meat, there is one company who has just decided to do grow it ina lab. aleph farms are creating wha't known as cultured meat, grown using animal cells. this meat does not fill any agricultural land with gas emitting livestock and no animals need to be slaughtered. we use less resources, less input feed the cells than nneded to feed the animal. but also addressing the issues

of animal welfare, the use of antibiotics, one of the key drivers for developing the superbugs, resisance to antibiotics. the potential for creating a more sustainable way to feed the planet is huge, but again the price, at around £2000 per kilogram right now, puts this away outside regular household food budgets. there is also the not so little matter of getting approval from food safety authorities before you even think about selling it, which could take years. for many, switching to a meat—free diet is partly about sustainability and partly about better health. but beyond the marketing hype, are these heavily—processed foods actually achieving either goal? with cultured meat, you are in many cases trading off reduction of methane for potentially substantial increases in the c02 emission.

there's a lot of debate and uncertainty around if highly processed food is intrinsically bad for you or not. actually look at what is done to that food on the way to you, and how much energy is added to it in the course of processing, and how many pollutants are produced, that's an essential thing. there is still a long way to go to produce an effective meat substitute that is both delicious and affordable. but with a third of britons already stating they lead a mainly vegetarian life, it's a booming market attracting a lot of investment to design the perfect meat replacement. to make the whole food industry more sustainable, we're also going to need to broaden our diets. i've come here to copenhagen to visit ikea's research and development lab, space 10,

to see what they have in mind. what we are exploring is not necessarily going to end up in ikea restaurants any day soon. 0ur starting point is, really, how do we feed 10 billion people in a sustainable matter and without compromising deliciousness. what am i having? today you are having our dogless hot dog. a dogless hot dog! we use carrots instead of sausages. 0k. which we have poached in a mixture of apple juice and carrotjuice. then we have dried them in the oven for about one and a half hours, so there is shrinking and they get 00:22:44,135 --> 2147483051:48:06,782 a chewy texture to them, 2147483051:48:06,782 --> 4294966103:13:29,430 kind of like meat in a way.