or is infested by germany across and he employed discourses tactic good farms and destroyed lights. what is the legacy of this wide spread races, depression? today, the screen. we need to talk about here, the stories, shadows of german colonialism. growing up interest on the present palestinians ever known, we don't expect much living with a bare minimum. this is not a good environment, not for me. not for my children without civil rights and with no prospect. but what can we do? and david shudder, stotts oldest good. on the w, the list goes to town in the german city of heidelberg, used to be a bustling u. s. army base housing,

nearly 5000 people. but it's been closer more than a decade, like many old bases around germany with usually continue to rock or be torn down. instead, this many city is up for a makeover in this part of a massive urban experiment. while many of the nearly $300.00 buildings here are set to be referred to as those that don't fit into the plans aren't just going to be demolished, they'll be picked apart and their materials will either be recycled or reduced. this technique is called urban minus a construction trend that's picking up steam around the world. so how exactly does it work in tenant live up to the higher the built in the 1950s as part of the us military's significant cold war presidents in west germany. patrick henry village was an american island on the outskirts of

titled like many us army bases. it was basically its own little city, with housing for thousands of soldiers and their families, schools, a church, a bowling alley, and most importantly, that even had american fast food chains you couldn't find in the rest of germany. but after us troops relocated to nearby the spot in in 2012. patrick henry village became a ghost town, leaving behind thousands of american appliances and even outlets. since then, the year is only been used in part to temporarily house refugees. the city has grand plans to redevelop the village into a shiny new district with housing for thousands offices in green spaces that would typically mean mass demolishing and getting rid of these old houses and putting up entirely new ones. but old buildings are only a problem if we see them as such. yeah. yeah. and are mining concepts into the so called the city as a kind of self cause? i some stuff with this was mentioned, huntington, the last not least,

we either need it and basketball, the guy from voice you're going or chuck is hydro bigs deputy mer and heads up in the city planning department, some border subsidies here i use the games and when these are sets of what of that section i'm going to do. some a tie in these no instruct type on. roughly one 3rd of the buildings will be left standing, gutted and renovated as the rest will be taken down to make space for a denser neighborhood with mixed use buildings, not just housing. but the special thing about this project is that instead of sending the deconstructed buildings to landfill, the goal is to re sell for use or recycle every thing that you can see here, from literally the ground. while windows like these could typically be used for changing energy standards, since these were put in, it means that they can, they tend to be recycled. a tricky process, but it's possible concrete can either be view sort,

recycled as well. but then we've got to find a home for all these big old american fringes in germany. all those will be tough. so all of this represents a new approach to old buildings and goods. quite development of the menu item is called is asked by that has declared, allowed me to that it was my magnets and comes with my not much improving how we build things is vital construction accounts for 13 percent of global energy related carbon emissions. and it's not just about putting up buildings with buildings or demolished, they usually end up in landfill. all told construction and demolition account for about one 3rd of all the waste in europe. projects like the one in the heidelberg can do their part to change this. but it didn't actually start here, it started in an office and stood car about a 100 kilometers. so the 1st step is actually to, to get an idea of what do you have to sign which works for e t a, an environmental consulting company that's partnered with title back to build a database of the cities building stock,

starting with patrick henry village. so you need to know exactly how much material you have, what is the properties of the material or the hazardous substances. for instance, you can estimate of buildings construction materials based on its age and location and its data base hope. so these i titled may i get a sense of reusable and recyclable materials at their disposal on planning new projects titled back then confirms the estimates that means boring holes and the floors walls and ceilings and making a checklist of everything looked hanging around the former base it shows you that over 52 percent of the building has ex, the concrete in around 5 percent. this metal. and this is like a 1st overview of the inventory. this information is track for the whole neighborhood with a breakdown of all 500000 tons of material. look, i know this seems a bit try and without any of this documentation in all of these databases,

that'd be actual mining of urban mining is remotely possible, or mining is the systematic management of everything that's mandate. so before everything is coming to waste. and so how do we manage materials so they don't become waste, but we can use them again as a resource. paula urban mining sometimes called circular construction, is a new term and has begun to take off in the last 5 to 10 years. it's not a new principle up until the industrial revolution. actually urban mining was very common. me go shell and focuses on the built environment at dutch sustainability, consult and see metabolic during the industrial revolution. i think that's what we see with a lot of production processes that production became cheaper mazda assumption became more common and we kind of let go of, we're using what we already have. metabolic urban mining efforts include partnering with cities, architects and construction companies. i think

a very interesting case that we worked on is the building of the dutch national bank. the 14 story skyscraper was entirely disassembled, metabolic, are working with the developer to design a new building from the secondary materials. they've also built in the office park of old house boats similar and mining projects that popped up from switzerland to belgium. and cities in the us are increasingly building material databases and passing laws that require buildings to be deconstructed, not demolished, but urban mining isn't one size fits all. the way we tried to solve the problem is not the same in different regions in different countries. boucher iran ego research has the built environment and co leads to you and sustainable buildings program. in the global south, for example, they're just starting as many empty houses office and shops as in the global north . but in a way, urban mining is pretty big here. even though people don't necessarily call it that,

when you think of informal sacraments, for instance, they are very set, you know, in that materials that have been using these informal supplements have been, have had several lives before the end up in um, in these informing areas. and how to bag this process is a lot more bureaucratic, painstakingly documenting every tile in an entire many city by color may seem a little bit crazy, but you never know when it might help. and that's not even the hard part. it's now that's a real some weekends and things that can be directly reused will need to be sold. the or the title isn't cushion on the i'm most trying to, if i think the feet of the i'm a stick doors on to that and sure thing on bush picking on, i'm a to and i'm a to one, come on for like to buy to haven't been unlocked, if it's in that and so she had 2nd thoughts on the pro mox in the goods to some of the been to gotten to the title of the sort of them to buildings themselves will

have to be picked apart. and then you need to figure out what to do with the materials. take the $90000.00 tons of brick at patrick henry village. most of that will be able to be reused to some degree. but for the 230000 tons of concrete, it's a different story with that and in between the to the for all right. and this, and that would combine that and the to like some type of support for this. my tell you all knowing the tone to refute that sometimes when the ball punch lost into that as a single it'd be for she didn't for the items. vega, the ticket time for you to out from i tell you i, you know, that some feed up even if we start cataloging and mining our buildings on a grand scale, will never be able to entirely eliminate the use of new building for us. it's not just about how we deconstruct what's already here. it's also about rethinking how we built to, usually in the building, you design a building, and then you find materials that fits. but if you have to design and because set of

materials, then you really have to shift your way of thinking. i really have also a different position as an architect. this whole process to be more of a assembler of materials instead of a designer of the building, will need to use different materials if we want to make future urban mining easier . with that in mind, it builds with materials that are prime for easy reuse, pencil all of the untreated wood furniture in their office. they've also designed a circularity passport for new buildings that logs materials for future reference and tracking. this data could soon be a requirement in germany, despite the different contexts, lessons from these projects could be useful all over the world. if we are going to be building, um, say office buildings and the build this out. can we design these buildings so that these buildings could be deconstructed easily? thing 20 or 30 years, or 40 years. but to make this happen in the 1st place, they just might have to cut some red tape,

which is something heidelberg planners knew all about. the listening really intensive of person. um does this my tell you all of us who yeah. how we might, it's, um, basically a pleasure to the buyers upside is about leasing team us definitely looking to push them to the t, but these are my tie end and just was on and so on. and with the individual or the mining project starting to pop up all over the place, governments will have to help coordinate these complicated logistics. and they'll also have to step in to help overcome what might be the biggest challenge cost. so when you look at virgin materials, they admit a lot of c o 2 and they're very helpful for the environments. but they're often a lot cheaper than a secondary materials because labor, it's quite expensive. now current system, incentivizing urban mining and making it cheaper, we'll help track change, but it will still take time. projects like fido backs, patrick henry, village re development or a start. but all so show just how much has to change to get with an a smith of

those goals. the name is i think i want to say guns for you to mention a funny that for the and size of the guys them cut on that i meant to move his feet of all stuff. anything that he can go off if we need any of us that. so and then even to this guy's low, i'll buy it and this kinds of things and this to so if i want, just let us know in the comments. if there are any urban mining projects happening where you live, thanks a lot for watching and don't forget to subscribe. you've got new videos for you. every friday, the conflicts crises, every single connection mapped out shows the geophysical reality. the on the board is what makes things the way they are mapped out, navigating

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