Global Cities Documentary

簡要總結

本影片探討了城市網絡在全球化時代中的演變,以及這種轉變如何影響經濟、社會和環境。影片強調了城市從文明中心到全球經濟引擎的轉變,以及快速城市化帶來的機遇和挑戰。重點包括:

  • 城市化以前所未有的速度和規模發展,尤其是在非洲和亞洲的新興經濟體中。
  • 城市網絡是推動全球經濟發展的關鍵,但同時也加劇了不平等和環境問題。
  • 全球城市在連接全球網絡方面扮演關鍵角色,但也面臨著與本地需求和治理結構脫節的問題。

導論:城市在全球化時代的角色

城市在數千年來一直是文明的中心,見證了無數帝國和政府的興衰。然而,在過去幾十年中,城市的結構正在經歷根本性的轉變。目前的大規模城市化浪潮在速度和規模上都是前所未有的,全球城市人口每週增加超過一百萬人。預計在未來幾十年內,全球城市人口將增加20億至30億,這也推動了歷史上最大規模的技術基礎設施建設。

城市化的機遇與挑戰

大部分城市化將發生在非洲和亞洲的新興經濟體中,帶來巨大的社會和環境轉變,以及全球經濟重心的重大轉移。雖然城市化為經濟發展提供了前所未有的機會,但也帶來了挑戰,例如貧民窟的擴張、貧富差距的擴大以及環境惡化。城市作為商業、交通、通訊和金融流動的樞紐,推動了經濟和社會發展,為全球經濟交流提供了機會。

城市網絡的興起

城市不僅吸引了大量人口,還融入了日益擴大和密集的交流網絡中。城市的形態、影響範圍、形式和功能正在發生轉變,以支持全球網絡的發展。無數重疊和交叉的理念、知識、人員、資金、商品和服務不僅連接了主要城市和城市區域,還連接了越來越多的不同地點和生態系統,形成不斷擴大的全球交流網絡。這些經濟、社會、政治和文化組織網絡以全球城市為中心,創造了新的連接地理、新的經濟成功規則和新的治理模式。

城市網絡的演變:從新石器時代到工業時代

城市網絡是由人類和技術組成的複雜系統,是經過數千年發展而成的人造環境。從最初的簡單工具和小規模住所,到今天遍布全球、支持數十億人口的複雜城市網絡,人類的工程環境不斷演變。新石器時代革命是第一個重大的技術革命,固定農業生產系統和永久定居點的發展,形成了最初的城市基礎設施系統。隨著農業、灌溉系統和人口密度的進步,大型聚落形成,並發展成城鎮和城市。工業革命帶來了機械化系統,城市中心大規模擴張,國家基礎設施網絡得以發展。

全球化與城市網絡的轉型

在20世紀下半葉,隨著國家經濟和基礎設施日益融入全球交流網絡,重大的技術和經濟變革正在發生。低成本計算和電訊網絡的出現,推動了更大規模、更複雜的組織系統的發展。金融市場放鬆管制並擴展到全球網絡,跨國公司迅速崛起,全球供應鏈開始形成,全球經濟在短短幾十年內大幅擴張。全球經濟正在經歷深刻的結構性轉變,從以民族國家為中心的工業模式轉向以全球交流網絡為基礎的服務和資訊經濟。

城市網絡:全球連接的物理形式

城市網絡是連接的物理手段,是使我們能夠克服物理邊界並連接到更大網絡的技術系統。這些道路、通訊、電力線、物流、航空運輸和航運網絡是全球連接的物理形式。全球網絡中流動的資源遠遠超過任何國家經濟體,人們湧向城市,將其視為進入這些新興全球網絡的入口和機會。隨著經濟和社會發展成某種形式的全球組織,技術基礎設施也在轉變為新的城市網絡結構,以實現物理連接。

後工業時代的城市:服務與資訊的中心

全球經濟已從農業和工業轉向以服務和資訊為主導。社會和經濟的組織方式也從以國家領土內的農業和工業為主,轉向以服務提供、資訊處理和知識創造為主。城市中心提供了這種連接,隨著經濟從工業轉向後工業服務經濟,城市作為高附加值服務、創新和知識創造的中心,被賦予了新的戰略角色。

全球城市:連接全球網絡的樞紐

隨著全球化和城市化,我們正在創造一種新的地理,一種基於功能連接而非物理邊界的地理。全球網絡本質上是功能性的,水平連接的建立是為了促進交流。全球城市是提供整合整個網絡服務的城市中心,超過100個全球城市組成的網絡被視為全球金融網絡的登陸點和物流網絡的樞紐。這些城市構成無數重疊和交叉的理念、知識、人員和資金流動,對全球事務產生直接而切實的影響。

全球城市的角色與競爭

成為全球城市並非取決於規模或經濟規模,而是取決於在全球交流網絡中執行差異化的功能,使其成為全球價值鏈中的戰略位置。全球城市在特定網絡中扮演特定角色,例如台北和深圳是高科技電子產品供應網絡的主要節點,而日內瓦和內羅畢是全球公民社會網絡的重要節點。倫敦、紐約、東京和巴黎等城市在幾乎所有這些網絡中都扮演著重要角色,它們調節著大量的金融資本流動,有效地協調著數百萬人和生產過程。

城市網絡與本地治理的脫節

城市轉型不僅僅是城市規模的擴大,更是領土和基本組織原則的重新配置,從文化和領土邊界轉向功能連接。全球化創造了一種基於交流網絡的新空間形式,而這種空間的物理形式就是城市網絡。這種由市場邏輯驅動、主要響應全球交流網絡並由強大的私人行為者運營的城市網絡新幾何,與本地領土和現有的治理結構產生了巨大的脫節。

金融化對城市發展的影響

金融化改變了城市發展的投資形式,對城市網絡的演變產生了重大影響。私人和公共之間的界限變得模糊,金融邏輯在城市空間的發展中變得更加普遍。城市越來越多地被定義為投資工具,而不是共享的生活空間。大量資本從全球金融系統流入主要城市中心的發展,造成了社區的本地需求與私人行為者需求之間的巨大脫節。

全球化與本地需求的衝突

全球化進程產生了本地人民需求與全球網絡市場邏輯之間不斷演變的關係。世界城市是這種衝突的中心,它們是全球化的前沿地帶,也是為網絡時代尋求新的組織系統的鬥爭場所。由於現有治理結構因問題的複雜性而癱瘓,城市採取務實行動,成為金融化和環境變化的前沿。

人類世與城市網絡的環境影響

城市網絡的興起與人類進入人類世(即人類時代)的更廣泛變革進程相一致。自1950年以來,地球系統的重大變化與全球經濟系統的變化直接相關,這與主要城市中心的崛起同時發生。城市中心僅佔全球土地面積的3%,但它們的物理影響與城市範圍之外發生的非常複雜的環境轉變直接相關。為了供應最大的城市中心,大規模的行星代謝流動被調動起來,整個區域的領土和景觀以新的方式運作,以提供食物、能源、水、材料和其他基本資源,導致生態系統發生大規模轉變。

特大城市與環境脆弱性

最大的土地和資源消耗者是特大城市,即人口超過1000萬的城市中心。環境方面,與城市中心可持續性相關的許多因素與城市環境的密度密切相關。世界許多地方目前的城市化模式導致低密度郊區化,依賴汽車,能源密集型,並對氣候變化產生重大影響。墨西哥城的城市發展導致了城市環境的蔓延,空氣污染和嚴重的交通擁堵。

城市網絡與城鄉融合

城市網絡的興起對應於傳統的城鄉劃分的轉變,這種劃分正在讓位於一種更微妙的組合。城市正在分散到更大的城市網絡中,將自然和人造環境融合在一個新的城市區域地理中,這個區域可能跨越數百公里並跨越國界。在人類世時代,人類對生物圈的影響無處不在,可持續性的挑戰不再是限制城市中心,而是開發能夠以新的方式融合自然和人造環境以創造協同效應的工程環境。

城市密度與可持續發展的機會

城市密度也為創造多功能、緊湊、整合和生態連接的城市環境提供了機會。生態高效的城市系統經過戰略性的密集化和分散化,以創建一個高密度節點網絡,這些節點通過高效且負擔得起的大眾運輸互連。在這些緊湊、設計良好的城市環境中,人們消耗更少的能源、更少的土地,並且更加互連。

城市作為經濟引擎與全球經濟重心轉移

幾個世紀以來,城市一直是世界經濟的引擎,吸引了技術工人並受益於規模經濟,從而創造了生產性企業。從歷史上看,城市化與人均GDP往往密切相關。隨著發展中經濟體中大型城市中心的崛起,我們正在目睹地球經濟重心歷史上最重大的轉移。世界經濟現在真正變得全球分散,越來越少地以發達經濟體為中心。非洲和亞洲的城市地區將吸收未來幾十年世界人口的幾乎所有預計增長。

城市化與減貧的機會

為了使城市化進程取得成功,城市必須將其人口連接到全球經濟交流網絡。有效管理的城市中心可以成為連接人們並為他們提供機會的系統。在中國,城市化和大規模經濟增長的結合,在短短30年內幫助6.8億人擺脫了極端貧困,這在歷史上是前所未有的。許多亞洲國家的成功向我們展示了連接到全球供應鏈的城市中心轉變人們生活水平和機會的能力。

城市化與排斥的風險

在世界其他地區,城市化一直是排斥的力量。近年來,城市化越來越多地發生在GDP非常低的國家,這些國家在經濟和社會上最沒有能力應對這種轉變。大量湧入撒哈拉以南非洲城市的移民似乎使政府規劃者和政策制定者不堪重負,導致貧民窟居民目前佔城市人口的60%以上。未能滿足數百萬尋求更好機會的移民願望的城市,有可能成為失敗的項目,滋生前所未有的規模和複雜程度的新的社會和環境挑戰。

非正式城市網絡與貧民窟的擴張

缺乏基礎設施導致擁堵、污染和公共服務不足。這些城市系統沒有連接人們,而是蔓延成不相連的貧民窟,非正式城市網絡填補了政府過度擴張和資金不足的空白。貧民窟是巨大的城市系統,土地使用非法安排,普遍缺乏基礎設施、公共設施和基本服務,例如改善的飲用水、廢物處理或交通。未來幾十年城市網絡的大部分增長將不是過去的正式規劃基礎設施系統,而是這種非正式的定居點。

包容性增長的挑戰

包容性增長是我們遠未實現的重大挑戰。許多新興的特大城市沒有連接人們,而是變得更加經濟不平等,它們變得更加分裂和隔閡。發展中經濟體在實現增長方面做得越來越好,但往往看到這種增長的益處集中在收入分配的較高層次。在社會方面,我們目前在世界許多地方的城市化模式產生了多種形式的不平等和排斥,這在城市中造成了空間劃分,通常以貧民窟地區或封閉社區為特徵。

環境與社會可持續性的聯繫

環境和社會可持續性越來越多地聯繫在一起,並被視為不再是可有可無的東西,而是實際的安全問題。環境惡化正在改變世界各地的生態系統,數億小規模自給農民依賴這些生態系統。當它們發生變化,人們無法再繼續他們傳統的生活方式時,這往往會導致他們遷移到準備不足的城市,最終導致他們最終進入貧民窟。隨著環境危機的展開,這種聯繫只會變得更加牢固和關鍵。

全球互連與脆弱性網絡

全球化是建立經濟、社會和技術組織的全球系統。這種連接跨越邊界,減少了所有分歧,並創造了相互依賴性,通過共同的利益、機會和威脅將不同的人和地方聯繫在一起。全球城市是這個網絡中的物理超級連接器,但它們也是超級斷開器。當城市化成功時,人們會融入全球經濟和社會;當城市化不成功時,他們會以新的方式斷開和分裂。

城市化對人類未來的影響

在過去幾十年中,我們創建了一種新的經濟組織系統,即全球供應鏈和支持它們的城市網絡。全球城市現在是推動世界前進的引擎,未來幾十年城市化進程的發展將塑造本世紀的結構,以及人類與地球之間關係的未來。目前的城市化進程無非是人類棲息地的根本轉變,人類的本土環境正在以驚人的速度從自然環境轉變為人造環境。在這個過程中,我們不僅重建了我們周圍的世界,而且城市化也改變了我們,它創造了一種新的環境、新的思維方式、新的工作模式、新的治理模式、新的生產和交流模式,以及人們之間的互動,通過這些互動,我們重新定義了自己以及我們與自然環境的關係。

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0:00 [Music] cities have been for thousands of years the centers of civilization as they have watched empires kingdoms governments and corporations come and go but in the space of just a few decades our urban fabric is undergoing a radical transformation today's wave of mass urbanization is historically unprecedented in speed and scale today over 1 million people are

0:47 added to the global urban population every week in the space of a few decades we are in the process of doubling our urban capacity adding an extra 2 to 3 billion more people to our urban environment as a consequence the world is currently going through its biggest build-out of technology infrastructure in history we will build more ports buildings roads bridges rail lines airports power cables and telecommunication networks in the coming decades than we have since the beginning of civilization [Music] much of this urbanization will unfold in the emerging economies of Africa and

1:35 Asia bringing huge social and environmental transformations but also the most significant shift in the Earth's economic center of gravity ever seen our future is set to be urban as the world's population is increasingly concentrated in urban settlements this creates new opportunities and new challenges in a fast changing context rapid unplanned urban growth can lead to an expansion of urban slums exacerbating poverty and inequality hampering efforts to provide basic infrastructure and accelerate environmental degradation but urbanization also presents unprecedented

2:20 opportunities for rapid economic development as hubs of commerce transportation communication and flows of financed cities drive economic and social development offering us the unprecedented opportunity to bring the majority of the world's population into the global economy of exchange [Music] not only are people flocking into cities at the same time our urban centers are becoming integrated into ever larger and ever denser networks of exchange the way cities are shaped their scale scope of influence form and functionality is being transformed to

3:08 support the rise of global networks a myriad of overlapping and intersecting flows of ideas knowledge people money goods and services link not only major cities and city regions but an increasing number of diverse places and Ecology's into expanding global networks of exchange these networks of economic social political and cultural organization pivot around global cities creating a new geography of connectivity new rules for economic success and new patterns of governance the rise of urban networks is linked to a much broader set of social economic and technological transformations taking place in the global economy today this documentary

3:55 explores this changing landscape and the development of urban networks as the emerging geography of connectivity in an age of globalization [Music]

4:51 urban networks are complex systems of people and technology the constitute are engineered environment over the course of thousands of years we have gone from the first engineered environments composed of a few discreet hand tools and small shelters built around the individual and local community to the complex urban networks of today that span around the planet enabling global economic processes to support billions of people [Music] [Laughter] [Music] [Laughter]

5:42 just 12,000 years ago as few as four million people inhabited the earth nomads that roam the land following the seasons the first humans being nomadic would have lived almost completely without fixed technology infrastructure simply using hand tools and temporary shelters from about 10,000 years ago in response to the warming climates at the end of the last ice age some groups adapted to the changing environment in new ways these changes in organization would lead to the first major paradigm shift in our engineered environment what we call the Neolithic Revolution the Neolithic Revolution was the first major technology revolution the critical turning point would have been the development of fixed and

6:29 permanent systems of agricultural production and permanent settlements built around this permanent shelters like Hut's storage areas wells for water agricultural systems for food fixed pathways distinct buildings for congregation and ceremony with all of these being integrated around the community creating the first urban infrastructure systems the permanent settlement of humans within fixed communities led to prolonged and sustained technological and economic innovation giving rise to advanced civilization advances in agriculture irrigation systems the harnessing of animal muscle as an energy source and population density would lead to the formation of large settlements in the form of Hamlet's which evolved into

7:15 towns and even cities as the first empires formed with ever more complex economic and social organizations forming we started to engineer our environments like never before building the first human design landscapes in the form of urban centers like the ancient cities of Babylon or Damascus [Laughter] [Music] [Laughter] [Music]

8:03 throughout history the evolution of our engineered environment has been directly related to our knowledge of the natural environment around us for much of human history our scientific knowledge was very limited in scope and depth the great expansion of this knowledge that happened during the Scientific Revolution laid the foundations for a massive explosion in technological change one of the hallmarks of the modern era the much deeper understanding of our physical environment that modern science brought enabled a new level in our capacities to engineer the natural environment and gave rise to what has come to be called the Industrial Revolution the Industrial Age was the age of machines as we tapped into a new

8:49 energy source technology became alive evolving into large mechanical systems no longer dependent upon human and animal energy sources we could develop larger and larger mechanical systems powered by artificial energy sources instead of technology being built around people as with the hand tool increasingly people based their work around machines as they became operators of large industrial machinery that enabled mass production processes our technology infrastructure became increasingly defined by mechanized systems that automated physical activities by fueling them with artificial energy sources this enabled a new scale to our engineered environment as urban centers greatly expanded

9:35 [Music] [Laughter] before 1800 there was less than 10% of people living in cities and there was no overall urbanization however this started to change in a substantive way by the beginning of the 1900s at which time 20 percent of world population was urban the development of industrial economies went hand-in-hand with the development of the nation-state as the social and economic organizational unit of the modern era during the 19th and 20th century centralized national governments worked to leverage these new industrial technologies towards building their own national infrastructure systems the use of the combustion engine

10:22 to bring artificial energy sources to mass transport began to integrate the infrastructure of whole national economies across broad geographical areas across Europe and the u.s. national infrastructure networks were developed during the 19th and early 20th century national railways in Europe National Road systems like the interstate highways in the u.s. national water systems telephone networks centralized broadcast media by 1950 urbanization had reached 30% around the world but it was not until the new millennium before we would reach the symbolic tipping point of half of humanity living in urban centers

11:30 [Music] by the latter half of the twentieth century major new technological and economic processes of change were underway as national economies and infrastructure were becoming increasingly connected into global networks of exchange the advent of low-cost computing and telecommunication networks would work to enable the development of ever larger more complex systems of organization in the 80s and 90s financial markets became deregulated

12:16 and expanded into a global network of exchange we saw a huge rise in multinational corporations as they expanded beyond their national economies entering into new markets through outsourcing enterprises became distributed out with advances in transport and trade liberalisation integrated global supply chains started to take form and the global economy expanded hugely within the space of just a few decades [Music] with the development of globalization the emergence of the services economy and information technology the global

13:03 economy is going through a deep structural transformation moving from an industrial model of mass production organized around the nation-state and its territory into a new form of services and information economy based around global networks of exchange urban networks are the physical means of connectivity they are systems of technology that enable us to overcome physical borders and connect with ever larger networks these networks of roads of communications of power lines of logistics air transport shipping are the physical form of this global connectivity [Music] there are now vastly more resources

13:49 moving around in these global networks than in any national economy and around the world people are flocking to cities as points of access into these emerging global networks and the opportunities they provide as our economies and societies develop into some form of global organization so to our technology infrastructure is morphing into a new structure of urban networks that enables this physical connectivity just as the industrial technologies provided the physical means for enabling the national economy so too our technology infrastructure today is being reconfigured to provide the connectivity for a global economy [Music]

14:43 it is only in very recent years the global economy has switched from being dominated by agriculture and industry to becoming predominantly based on services and information as a consequence societies and economies around the world are being transformed from being primarily organized around physical agricultural and industrial processes within the national territory and instead moving to the delivery of services the processing of information and knowledge which is no longer defined by its physicality and the logic of territoriality but instead is one based on the logic of access and connectivity it is this connectivity that urban centers provide as economies shift from being industrial to post-industrial

15:28 services economies a new strategic role is given to cities as they become the locus of high value-added services of innovation and knowledge creation [Music] with globalization and urbanization we are in the process of creating a new geography a geography based around functional connectivity instead of physical borders whereas the building of the nation-state and its borders was cultural and ideological in nature these global networks are functional in nature connections are made horizontally to facilitate exchanges in a world where

16:15 market logic and technology have combined to create a powerful engine driving the world forward for better or worse [Music] the infrastructure networks that now stretch around the planet are held together by urban centers that form dense concentrations of connectivity urban centers function as the hubs within regional networks that reach into the territory of the locality linking it into larger networks of exchange on the

17:00 macro level these urban centers become nodes within the global network of cities that provide the critical mass of advanced services required to operate the world economy at its current level of functionality [Music] the leaders in providing this connectivity are what we call global cities these are urban centers that provide the services for integrating the whole network a network of over 100 global cities is now understood as the landing point for worldwide networks of Finance and the hubs for logistics networks these cities constitute a myriad of overlapping and intersecting flows of ideas knowledge people money

17:47 goods and have a direct and tangible effect on affairs around the planet when the world is seen from this perspective of urban connectivity a new image emerges where each city is horizontally oriented to other cities of the same level of interconnectivity as cities have become interconnected over the past decades they have come to identify themselves increasingly in relation to their peer cities around the world instead of so much with their national economy as these major urban centers have risen they have both come to take on more power and influence over their own operations and the operations of the global economy but they have also come to differentiate themselves within these larger networks and increasingly compete

18:32 with other cities [Music] being a global city though is not about size or even economic scale it is about performing a differentiated function within a global network of exchange and thus making them a strategic location within a worldwide value chain global cities play specific roles in specific networks for example cities like Taipei and Shenzhen our major nodes in the supply network for high-tech electronics while cities like Geneva and Nairobi are important nodes in global civil

19:19 society networks Dubai and Hong Kong for air transport networks Washington and Brussels for international political networks but the absolute leaders in this global connectivity play a major role in almost all these networks London New York Tokyo and Paris these urban networks are the most complex multi-dimensional and their influence is the farthest reaching they regulate vast flows of financial capital effectively coordinate millions of people and production processes in a multiplicity of overlapping complex networks tourist attractions research centres shopping destinations tech startups the engines of the knowledge economy corporate headquarters melting pots of people

20:06 ideas culture all concentrated in small areas of dense interaction and connected into information networks that shape the operations of the economy around the world [Music]

21:31 the urban transformation that is occurring to enable these global information and services networks is not just about cities getting bigger it is a reconfiguration of territory and basic organizational principles from cultural and territorial borders to functional connectivity globalization creates a new form of space based around networks of exchange and the physical form of that space is urban networks this new geometry of urban networks driven by a market logic responsive primarily to global networks of exchange and operated by powerful private actors creates a huge disjunction with local territory and existing governance structures cities still exist and operate within the national regulatory

22:18 framework which is designed according to the logic of its fixed territorial space when increasingly our economy and society operate based upon global networks anchored in cities these networks of information and services are increasingly bypassing the national territory altogether creating a new kind of global and local space that exists in urban centers one that requires a new organizational paradigm to structure and enable nowhere is this disjunction seen more clearly than in the major financial centers that are seen as the most strategic nodes in these global networks global cities are the landing points for the world's flow of capital and goods as these networks have grown the power of the corporations that operate them has likewise expanded greatly the global

23:05 city is the space where that power becomes materialized a point where highly abstract flows of capital and information become something material and visible to all [Music] throughout history urban centers have been the home of the dominant sources of power within society with the building's used to exhibit the power of those dominant actors whether this was the church government buildings or the monuments of Empires but over the past decades the centers of our iconic world cities has become the locus of corporate headquarters and financial centers with the rise of economic globalization the

23:51 multinational corporations and financial institutions that manage and operate these networks become the dominant actors this power is exhibited in a global city which has come to be shaped to a great extent by these powerful actors according to their logic and to accommodate their needs [Music] financialization has changed the form of investment in urban development with significant results for how urban networks have evolved over the past decades the lines between private and public have blurred while at the same

24:36 time the logic of finance becomes more pervasive in the development of the urban space cities have become increasingly defined in terms of investment vehicles instead of shared living spaces huge amounts of capital are now flowing into the development of the primary urban centers from the global financial system this financialization of real estate and urban centers has created a huge disjunction between the local needs of communities and those of these private actors where once urban development was driven by local incentives in response to the local needs of the place with financialization cities are becoming increasingly private spaces of investment that are primarily responsive to the logic of these flows of finance

25:22 [Music] the process of globalization engenders an evolving relationship between the local needs of people and the market logic of global networks world cities are at the epicenter of this conflict they are the frontier zone of globalization and the struggle for new systems of organization that would be relevant for an age of networks in a

26:08 time when existing governance structures are paralyzed by the complexity of the issues at hand cities take pragmatic action because they have to they are at the forefront of financialization and environmental changes the effects of these changes impact them directly and they are pushed to take action in the absence of appropriate governance mechanisms cities are becoming a new locus of action but this is a very different form of governance than the one we are used to it will be a governance structure that expresses the new forces at play of Finance and corporate supply chains of technology and increasingly internet platforms [Music]

27:55 the rise of urban networks and the movement of humanity into a predominantly engineered environment corresponds to a broader process of change brought about in the Anthropocene the so called age of humans after 1950 we can see for the first time that major Earth System changes became directly linked to changes largely related to the global economic system with this coinciding with the huge rise of major urban centers urban centers occupy only 3% of global land areas but their physical impact is directly connected to very complex environmental transformations that take place far beyond the confines of the city large-scale planetary metabolic

28:43 flows are mobilized in order to supply the largest urban centers whole region's territories and landscapes are operationalized in new ways in order to provide food energy water materials and other basic resources that result in massive transformations in ecosystems far away and often unseen by the population landscapes in Malaysia are transformed into palm plantations for biofuels that keep urban transport systems running cement and iron are pulled out of the ground in Russia to lay concrete for the 20 million Chinese moving into cities every year water systems in the Himalayas are altered to provide for the urban centres of northern India rare earth metals

29:28 extracted from Africa for the millions of smartphones that keep Paris connected [Music] because you knew what is he gonna rape you the largest of these land and resource consumers are what we call mega cities which are urban centers of more than 10 million people in 1915 New York was the first mega city on the planet by 1985 there were nine of such kind today there are 31 mega cities and this is projected to rise to 41 within just over a decade the largest of these mega cities is

30:14 Tokyo with over 30 million people it is the 10th largest economy in the world larger than Russia Spain or turkey [Music] Jakarta is likewise one of the largest mega cities it's mass of concrete sprawling out to support a population greater than that of Australia [Music] environmentally many of the factors relating to the sustainability of an urban center are closely connected to the density of the urban environment the current model of urbanization in many parts of the world engenders low density sub urbanization with the dependence on car ownership it is energy intensive and contributes substantive Li to climate

31:00 change for example urban development in Mexico City has resulted in a sprawling urban environment with air pollution and major traffic congestion a city with an average daily commute time of two and a half hours the physical space that these cities consume is projected to increase two to three times in the coming decades and the material consumption of cities is likewise set to double over this time sprawling cities where residents are dependent on cars to obtain basic provisions in far-off places of the city are a critical vulnerability many populations around the world face today as the impacts of climate change are set to only increase in the coming decades large monolithic centralized urban systems are presenting increasing

31:46 vulnerabilities [Music] the rise of urban networks corresponds to a transformation in the traditional

32:32 divided between countryside and city which is giving way to a much more subtle combination cities are becoming distributed out into larger urban networks merging natural and engineered environments within a new geography of the city region that may span hundreds of kilometres and cross national borders interlinked ground transportation corridors such as high-speed rail and expressways have aided in the integration of urban centers into large distributed networks like the Randstad area in northern europe connecting Amsterdam Rotterdam and The Hague or the Pearl Delta region in southern China connecting Hong Kong Shenzhen and Guangzhou which is emerging as the largest urban area in the world in both size and population in the age of the

33:19 Anthropocene when human impacts on the biosphere are all pervasive the challenge of sustainability is no longer one of confining urban centers but is now one of developing engineered environments that managed to merge the natural and artificial in new ways to create synergies in the challenge of city density is also the opportunity for creating multifunctional compact integrated and ecologically connected urban environments ecologically efficient urban systems are strategically densified and distributed to create a network of high-density nodes interconnected with efficient and affordable mass transit in these compact well-designed urban environments people

34:06 consume less energy less land and are more connected with the rise of urban systems we are increasingly recognizing that the battle for a sustainable future will be won or it will be lost in cities and there is a race to build a functional sustainable model of a city and to replicate that model around the world [Music]

35:02 you [Music] cities have been the world's economic engines for centuries attracting skilled workers and benefiting from economies of scale to create productive enterprises historically urbanization and per capita GDP tend to move in close sync as countries develop no country has ever reached middle income status without urbanizing by harnessing economies of scale attracting firms sharing knowledge and fostering pools of talent cities have a special ability to achieve

35:47 results that are more than the sum of their parts adding value for both society and enterprises with the rise of massive urban centers in developing economies we are witnessing the most significant shift in the Earth's economic center of gravity in history the world economy is now truly becoming globally distributed out less and less centered around the developed economies the urban areas of Africa and Asia will absorb nearly all of the projected growth of the world population in the coming decades of the 2.5 billion new urban dwellers anticipated by 2050 90% will live in Africa and Asia China India and Nigeria being the primary locus of a process of

36:34 urbanization that now offers hope for raising billions out of poverty and creating a more balanced overall distribution of resources in the world around the world people are flocking to cities as points of access into these emerging global networks and the opportunities they provide for this process of urbanization to be successful the city has to connect its population into global economic networks of exchange but many are ill-prepared for the scale of the process that is underway when managed effectively urban centers can be systems for connecting people and providing them with opportunities as we have seen with the development of urban Asia in China a coalescence of urbanization and massive economic growth helped pull six hundred and eighty million people out of extreme poverty

37:19 over the course of just 30 years unprecedented in history the success of many Asian nations has shown us the capacity of urban centers connected to global supply chains to transform people's standard of living and opportunities [Music]

38:14 but in other parts of the world urbanization has been a force for exclusion until recently urbanization largely happened within countries with relatively high GDP what has changed in the past decades is that it is increasingly happening in nations with very low GDP these nations are the least well equipped economically and socially to deal with the transformation the huge migration into sub-saharan African cities appears to overwhelm government planners and policy makers with the outcome being that slum dwellers currently account for over 60% of urban population while these African urban centers have had the highest inequality of wealth in the world cities that fail to meet the aspirations of the millions

39:00 who are migrating in search of better opportunities run the risk of becoming failed projects breeding new social and environmental challenges of an unprecedented scale and complexity lack of infrastructure creates congestion pollution and insufficient public services instead of connecting people these urban systems sprawl out into disconnected slums as informal urban networks fill the gap of overextended and underfunded government's the slums are huge urban systems with illegal arrangements of land-use the generally lack infrastructure public facilities and basic services such as improved drinking water waste disposal or transport much of the growth in urban networks over the coming decades will not be the formal planned infrastructure

39:46 systems of the past but instead informal settlements of this kind the informal slums of developing nations are growing in a significant way according to United Nations statistics the number of people living in slum conditions has grown from 650 million in 1990 to 760 million in 2000 and as of 2017 nearly 1 billion people live in slums this is set to double by 2030 under a business-as-usual scenario [Music]

40:48 as these slums are growing around the world in formal urban networks are becoming the new normal for urban development Kabara on the outskirts of Nairobi is considered one of the largest with some 600,000 people Dharavi in Mumbai is home to upwards of 700 thousand residents living in shacks in Rio de Janeiro the favelas started appearing in the 1950s and now housed a total of about 1 million people [Music]

41:36 inclusive growth is a major challenge that we are far from achieving instead of connecting people many of these emerging mega cities are becoming more economically unequal they are becoming more fractured and compartmentalized over the decades developing economies have been getting better at achieving growth but have often seen the benefits of that growth concentrated in the upper levels of the income distribution socially our current model of urbanization in many places around the world generates multiple forms of inequality and exclusion which creates spatial divisions in cities often characterized by slum areas or gated communities in places like South Paulo or Johannesburg inequality is now recognized as a major emerging urban

42:23 issue as the gap between the rich and the poor in most countries is at its highest levels in decades increasingly environmental and social sustainability are becoming linked and seen as no longer nice things to have but instead actual security issues environmental degradation is changing ecosystems around the world ecosystems that hundreds of millions of small-scale subsistence farmers are dependent upon when they change and people can no longer continue with their traditional

43:10 ways of life this often leads to migration into cities which are ill-prepared for them the net result being that they end up in slums as the environmental crisis unfolds going forward this linkage will only become stronger and more critical environmental changes will feed through to reveal previously latent networks of vulnerability in our social systems and technology infrastructure as global interconnectivity proliferates these networks of vulnerability will spread farther and shocks will propagate faster what happens in the slums of Mumbai and Lagos will increasingly affect everyone

43:56 [Music] globalization is the building of global systems of economic social and technological organization this connectivity crosses borders reduces all divides and creates inter dependencies that bind diverse people and places through shared interests opportunities and threats global cities are physical super connectors in this network but they are also super disconnectors when urbanization is successful people become integrated into a global economy and society when it is unsuccessful they become disconnected and divided in new ways but the consequences of that are no longer local with interconnectivity comes interdependencies and the benefits and losses become increasingly shared

44:42 globally in the space of just the past few decades we have created a new economic system of organization in the form of global supply chains and the urban networks that support them global cities are now the engines driving the world forward and how the process of urbanization plays out in the coming decades will shape the structure of what happens this century and indeed the future of the relationship between human beings and the planet the current process of urbanization is nothing less than a fundamental transformation in the human habitats the indigenous environment of humanity is changing from the natural environment to the engineered environment at a breathtaking speed in the space of just a few short

45:29 decades we will remake our environment and the patterns of organization that shape society and economy in this process we don't just rebuild the world around us but urbanization changes us it creates a new environment new ways of thinking new patterns of work of governance of production and exchange of interaction between people through which we come to redefine ourselves and our relationship to the natural environment [Music]

46:29 you [Music]

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