minnesota from georgia, dream potty is done just how the visual sort of meetings with the old on while the german investors are in this country. so i thought because they're all gone is not, does no good present the you with this with the brother, printer and government. thanks for watching the

use of to the full of the fun in november 9. the take a look at this building for thoughts and single floor and use a new daily, new york and hong kong. noticed anything. and these parts of the world life without air conditioning can be uncomfortable or downright dangerous. more than a dozen people have died and then during the last 2 months, due to a severe heat wave, this wave waste heat rate. but that brings us to our dilemma. technology needs lots of energy. in fact, cooling, building accounts for 10 percent over global electricity consumption, and that's bad news for global warming. so viciously, we call the indoors, but we want the outdoors,

therefore generating the need for more cooling. but there are solutions, some traditional, some modern that don't lead up the massive amounts of energy. so can they help us break out of this vicious circle? the, the story behind this conundrum begins in new york city in 1982. that's where the engineer will as carrier, leave the foundations for the modern air conditioner. he designed an engine to control the humidity and a printing plan because it was working the paper. simply speaking, the system blue air over coils filled with cool water. not only that, the humidity condensed on these quotes, but the air and the plants also became comfortably cool. over the next decade, more develop versions of the primitive system made it into businesses and later into american house. this month the baby will sleep quietly through the night. he has no manner. suddenly resting, working, living during hot weather, it was not only possible. it could be pleasant. nowadays,

americans are still some of the most prolific users globally 90 percent of us households on an air conditioner and some of the hardest parts of the roof. it's not even 10 percent. but other countries want to catch up. just look how much more energy some of these emerging economies are projected to use in the coming decades to colder homes and buildings. this is 2016 and this is 2050. you see in the us air conditioning market is going in double digits on good. clunky is working to open up the global market for high efficiency. air conditioners in the us population is growing in the is getting even more of like the but i'm also a large portion of the pending population is one of the nice thing is moving to cities. and all of dr. good, a wants to do is do a huge demand for the air conditioners because of trends like these global energy demand for space cooling is projected to triple by 20. 50. the question is, how do to the soaring demands without exacerbating the heat?

because and much of the world, the energy goes when technology is powered by fossil fuels, these are the lots of greenhouse gases which make the abaski or hotter. and nowadays, issues have refrigerants running through their coils to absorb heat from the warm air. some of them are literally greenhouse gases. you don't want those leaking out of your unit on top of that air conditioners, cool indoors basis, by pushing out the heat, that refrigerants absorb. that means they make the immediate surroundings hotter to, and people who can't afford to suffer most from that. so you go to 3 for the effect as a result of air conditioning on that my skin and be able to reduce it down to either a person holding or to cooling without air conditioning is really a smart solution to get that this is per side by the, an expert in passive solar design, he says there are 3 steps to quit sustainable here. first, we need to reduce heat at a city wide scale because that is access for everybody. you may have heard of the

urban heat island effect. it's when the urban areas like these get warmer than the surroundings, because all of this concrete absorbs and retain seats. and there's also lots of waste heat from human activities like transport or wild air conditioning, creating more spaces with shady trees and other plants less than a specific. like here in berlin, the colombian city has made a gene, was able to reduce average temperatures by 2 degree celsius only 3 years after planting green core doors. the interconnected network of greenery, expense, thousands of waterways and busy polluted streets. and minimizing heat exposed by cars also makes a difference in spain. parcel on a super blocks prioritize pedestrians and cyclists that scale matters. the cities institute for global health estimates that $117.00 heat related that's could be avoided every year of hundreds more blogs were introduced. the next step is

designing buildings that aren't as reliant on air conditioners. and this is where we can really learn from traditional architecture before technology or keep the runs awards phone solutions to, to show by the preferred chunk of, of done leads bio climatic architecture projects and countries like vietnam and more atanya. that means that designs take local climates into account, so we have to study typically, or he's got to go back to the architecture of some modern buildings already doing this, such as come to the university which uses wind power. so keep its buildings cool. this method has been used in iran and other middle eastern countries for centuries . the so called wind captures are designed to trap fresh air and directed indoors. the hot air gets pushed out. you may also have noticed that houses in hot climates are from light. some countries like india are bringing back this approach by painting grooves with line based whitewash,

which absorbs less heat. this can reduce indoor temperatures by 2 to 5 degrees celsius. when designing new buildings, bio kinetic architects tend to combine different sources of inspiration, but they will all tell you. location is everything. you have to pay attention about this an orientation and make sure your best sides the exposed to the direction. and then we use ready is that the difficulty is the wind direction. knowing the wind direction is important to design openings that encourage cross ventilation. other features that can help save off heat or shading devices to keep the facade cool. and insulation prevents heat from traveling through your roof. for example, colorado says these methods can reduce indoor temperatures by about 5 degrees celsius. well, ceiling fans can help circulate this cooler air. issues may still need to be used sometimes, but to a much lesser extent. the problem in many countries going to

a construction boom, new buildings often look like this. but it does tend to bid them with floor to ceiling glass. and that's the love problem, because every time you put a glass into a building, you've done it basically into a hot box. it's like a song uncle, the architects and engineers say this. acetic is popular because it's perceived this week, modern and less than natural life. changing that would require more rigorous building regulations around energy efficiency and a massive cultural shift to actually the men forced on the ground. most of the object this school is not uh, were on the train for the when you can get in that into there sort of business as usual approach you where you get this is uses. another big obstacle is that this approach tackles new construction. so what about all the old, badly insulated buildings that already exist? this takes us to the next solution, more efficient air conditioning because there is no technological reasoning for

a sees to use as much energy as many commercial models do. now the ac industry is included in order for the 100 in order to acknowledge the it's been working convenience, you know, at the switch of a button, we get cooling. this may have such or she works on a climate friendly cooling work festival. there hasn't been a lot of motivation or market factors that have spurred integration and you really see how wasteful is these can be in places like india, singapore or parts of the us because this is where it off and gets human. a lot of the color of the energy is used for managing to many well, some modern models have a so called dry mode to target humidity. kalonski says air conditioners are still pretty bad at measuring how much moisture is in the air. and consequently, how much moisture they need to remove for optimum comfort. so many people simply

blast to receives to over cool the room and get too many down to a desired level. in 2018 and innovation competition called the global cooling prize show that there are ways around this r m i r u. s. nonprofit dedicated to sustainable energy use, cooperated with the indian government and a global initiative called mission innovation to elect to winning teams. they used to have been tools the had biggest and thing capabilities and they weren't able to just is both of the temperature and the humidity. and that's how the, when he moved optimize the performance of an air conditioner, peered with other technological improvements. the 2 groups came up with models that had a 5 times lower climate impact to lock it says, one of the teams wants to put its unit on the market in 2025. but that comes with a set of challenges. the markets testing standards need to be updated, so the performance review takes into account how efficiently the air conditioner

controls humidity. large buyer is also need to come on board to bring down the costs. and consumers need to be incentivized to buy more efficient models, even though the sticker price may be higher. while the more efficient air conditioners are mostly upfront, you will see much more energy or the any your lifetime of the air conditioner and therefore the cost of ownership is, is about half of the standard products. but that's where the challenge lies, of either funds. you must do and have that financial aid ability to spend that money upfront or this thought about it. but what if we thought about efficient mechanical cooling on a much larger scale system like this is already functioning in singapore, here and underground air conditioner touted as the largest in the world, close residential buildings, bags, balls, and this iconic hotel. the technology is called district cooling and it can save up

to 50 percent on energy and emissions. that's because having one big planned cooling an entire district makes it super efficient. the water is chill. 25 meters below the ground before its pipes across different buildings. the shopping for district cooling is in terms of infrastructure. right. it's, it's, it's a, it's a big capital investment and it took was lot of infrastructure. so these, like toronto parents and hong kong have already taken on the can last the task of cooling thousands of buildings with one system. in some cases, district cooling makes use of networks that already exist. most of the system and parents runs through the cities to which networks. but for the most part, district cooling is better suited for new constructions. for example, who gerad, international finance, tech city, also known as gift city. while building the new hyper dense and in district developers had a blank canvas to implement any cooling solution,

they wanted their choice district cooling because it's more efficient and cheaper to maintain. this may sound utopian, but like all other solutions, it requires lots of upfront capital. know how and of course awareness still experts say this type of investment is urgently needed, whether it's on a city wide or neighborhood scale, or in broader a technological innovation. especially in places like india, china and indonesia, where if the usage has projected to sore, you don't have an option. we don't have enough energy in the world to be able to do all the building that's needed. even as we try to do it as do with energy, feels like slow steps and, and sometimes they are like, we are certainly making our way to with a better way to cool our visit environment. the good news is cooling doesn't always have to look like that. but if we don't move into a more sustainable direction, fast enough, we risk thing trapped in a solution that is actually part of the problem. i know i wouldn't have survived

the summer without my trust fund, so i'm wondering how do you pull your home and with any of these solutions, make a difference in your life. let us know the comments and don't forget to subscribe to our channel. the let's leave elect donald trump again. i am scared for the future of our democracy here. a lot of people on the left is genuinely like, don't see us as people stressed because we think of certain what about the future of this country. but it's also about the future generation. how is gain z shaping us politics? most of the next on d, w, conflicts, crises was,

every single connection mapped out shows the geo political reality be on the board is what makes things the way they are mapped out, navigating a changing world. now on youtube, the democracy is on the ballot this november with we elect donald trump again. i am scared for the future of our democracy in the, the a lot of people saying president trump the threatened democracy. i feel like because of that we've had the assassination attempts on in the country is deeply divided into highly polarized, still on partisan lines. he wants to be an autocrat himself. our country will be

dead if she gets elected or a lot of people on the left, the junior.