Sander van der Leeuw

A safe operating space for humanity

Identifying and quantifying planetary boundaries that must not be transgressed could help prevent human activities from causing unacceptable environmental change, argue Johan Rockstrom and colleagues.

Resilience and vulnerability: complementary or conflicting concepts?

Resilience and vulnerability represent two related yet different approaches to understanding the response of systems and actors to change; to shocks and surprises, as well as slow creeping changes. Their respective origins in ecological and social theory largely explain the continuing differences in approach to social-ecological dimensions of change. However, there are many areas of strong convergence. This paper explores the emerging linkages and complementarities between the concepts of resilience and vulnerability to identify areas of synergy. We do this with regard to theory, methodology, and application. The paper seeks to go beyond just recognizing the complementarities between the two approaches to demonstrate how researchers are actively engaging with each field to coproduce new knowledge, and to suggest promising areas of complementarity that are likely to further research and action in the field.

Tipping Toward Sustainability: Emerging Pathways of Transformation

This article explores the links between agency, institutions, and innovation in navigating shifts and large-scale transformations toward global sustainability. Our central question is whether social and technical innovations can reverse the trends that are challenging critical thresholds and creating tipping points in the earth system, and if not, what conditions are necessary to escape the current lock-in. Large-scale transformations in information technology, nano- and biotechnology, and new energy systems have the potential to significantly improve our lives; but if, in framing them, our globalized society fails to consider the capacity of the biosphere, there is a risk that unsustainable development pathways may be reinforced. Current institutional arrangements, including the lack of incentives for the private sector to innovate for sustainability, and the lags inherent in the path dependent nature of innovation, contribute to lock-in, as does our incapacity to easily grasp the interactions implicit in complex problems, referred to here as the ingenuity gap. Nonetheless, promising social and technical innovations with potential to change unsustainable trajectories need to be nurtured and connected to broad institutional resources and responses. In parallel, institutional entrepreneurs can work to reduce the resilience of dominant institutional systems and position viable shadow alternatives and niche regimes.

Urban Transitions: On Urban Resilience and Human-Dominated Ecosystems

Urbanization is a global multidimensional process paired with increasing uncertainty due to climate change, migration of people, and changes in the capacity to sustain ecosystem services. This article lays a foundation for discussing transitions in urban governance, which enable cities to navigate change, build capacity to withstand shocks, and use experimentation and innovation in face of uncertainty. Using the three concrete case cities—New Orleans, Cape Town, and Phoenix—the article analyzes thresholds and cross-scale interactions, and expands the scale at which urban resilience has been discussed by integrating the idea from geography that cities form part of “system of cities” (i.e., they cannot be seen as single entities). Based on this, the article argues that urban governance need to harness social networks of urban innovation to sustain ecosystem services, while nurturing discourses that situate the city as part of regional ecosystems. The article broadens the discussion on urban resilience while challenging resilience theory when addressing human-dominated ecosystems. Practical examples of harnessing urban innovation are presented, paired with an agenda for research and policy.

Placing archaeology at the center of socio-natural studies

Changing patterns of university and government research and training in this country and abroad force us, as archaeologists, to regularly reevaluate our disciplinary methods and goals. In the absence of careful consideration of these issues, the relative prominence of archaeology may stagnate or even diminish. From our own experience directing large multidisciplinary research projects, we believe that one particularly productive avenue for future archaeological research will be as collaborators in seeking to better understand contemporary socioenvironmental problems. We argue that current environmental research based in life, earth, and social sciences pays inadequate attention to the long time span and slow-moving processes that often underlie environmental crises. Archaeologists, as purveyors of the past, are well equipped to bring this long-term perspective to bear on contemporary issues. Moreover, we are also trained to work in multiple scales of time and space as well as with scientists from various disciplines. The primary obstacles to achieving the type of transdisciplinary research recommended here emanate from distinct vocabulary, concepts, and practices of each disciplinary tradition. We believe that the time is right and our colleagues are willing to see an enhanced role for archaeologists in the study of contemporary environmental issues.

Complex Land Systems: the Need for Long Time Perspectives to Assess their Future

The growing awareness about the need to anticipate the future of land systems focuses on how well we understand the interactions between society and environmental processes within a complexity framework. A major barrier to understanding is insufficient attention given to long (multidecadal) temporal perspectives on complex system behavior that can provide insights through both analog and evolutionary approaches. Analogs are useful in generating typologies of generic system behavior, whereas evolutionary assessments provide insight into site-specific system properties. Four dimensions of these properties: (1) trends and trajectories, (2) frequencies, thresholds and alternate steady states, (3) slow and fast processes, and (4) legacies and contingencies, are discussed. Compilations and analyses of past information and data from instruments and observations, palaeoenvironmental archives, and human and environmental history are now the subject of major international effort. The embedding of empirical information over multidecadal timescales in attempts to define and model sustainable and adaptive management of land systems is now not only possible, but also necessary.

Complexity perspectives in innovation and social change

Introduction.- Section 1: From biology to society.- Ch 1: Lane, Maxfield, Read and van der Leeuw, From population to organization thinking.- Ch 2: Read, Lane and van der Leeuw, The innovation innovation.- Ch 3: van der Leeuw, Lane and Read, The long-term evolution of social organization.- Ch 4: Ginzburg, Biological metaphors in economics: Natural selection and competition.- Ch 5: White, Innovation in the context of networks, hierarchy and social cohesion.- Section 2: Innovation and urban systems.- Ch 6: Bretagnolle, Pumain, The organization of urban systems.- Ch 7: Bettancourt, Lobo and West, The self similarity of human social organization in cities.- Ch 8: Pumain, Paulus and Vacchiani-Marcuzzo, Innovation cycles and urban dynamics.- Section 3: Innovation and market systems.- Ch 9: Lane and Maxfield, Building a new market system.- Ch 10: Rossi, Bertossi, Gurisatti and Sovieni, Incorporating a new technology into agent-artifact space: The case of control system automation in Europe.- Ch 11: Russo and Rossi, Innovation policies: Levels and levers.- Section 4: Modeling innovation and social change.- Ch 12: Pumain, Sanders, Bretagnolle, Glisse, and Mathian, The future of urban systems: exploratory models.- Ch 13: Serra, Villani and Lane, Modeling innovation.- Ch 14: Ferrari, Read, van der Leeuw, An agent based model of information flows in social dynamics.- Ch 15: Villani, Bonacini, Ferrari and Serra, An agent based model of exaptive processes.- Ch 16: Helbing, Kuhnert, Lammer, Johannsen, Gelsen, Ammoser and West, Power laws in urban supply networks, social systems and dense pedestrian.- Ch 17: Knappett et al., Using statistical physics to understand relational space: A case study from Mediterranean.- Conclusion.- List of contributors

Integrating problem and project-based learning into sustainability programs: A case study on the school of sustainability at Arizona state university

Purpose – The article aims to describe the problem- and project-based learning (PPBL) program and the institutional context at Arizona State University’s School of Sustainability (SOS), with the goal of offering experience-based guidance for similar initiatives in sustainability programs around the world. Design/methodology/approach – This case study presents the diverse PPBL activities that SOS offers on the undergraduate and the graduate levels and examines the institutional structures in place that support these activities. Data were collected through literature and document reviews, observations, interviews, student evaluations and faculty surveys. Findings – The review of the PPBL program at SOS illustrates a case of successfully inaugurating a PPBL program in sustainability at a major university in the USA. Yet, a key challenge for this program and similar programs around the world is how to maintain the institutional momentum and make advances after the initial takeoff. SOS is attempting to address...

How much time do we have? Urgency and rhetoric in sustainability science

Sustainability challenges are multitudinous, urgent, and complex. They are beyond the capacities of our current institutions to address, caused by path-dependent behaviors, and require substantial change from systems with crippling inertia. These problems are born of large-scale industrial economic policy, the rise of materialism, and the supremacy of profit over sustainability. Currently, academia is poorly positioned to address sustainability problems because of anachronistic pedagogy, mismatched incentives, insufficient expertise, lack of personal commitment, and insular products and communication. What transformational methods for research and practice, which involve relevant communities throughout problem-solving processes in meaningful ways, does sustainability science offer? Though rhetoric outweighs real-world sustainability transitions so far, we argue that operationalizing the goals of the field, developing the necessary competencies, and seeking novel partnerships between society and the academy will position academic institutions to make a bigger impact on the transition to sustainability.

Using patent technology codes to study technological change

Much work on technological change agrees that the recombination of new and existing technological capabilities is one of the principal sources of technological novelty. Patented inventions can be seen as bundles of distinct technologies brought together to accomplish a specific outcome – and this is how the US Patent Office defines inventions. The technologies constituting inventions are identified by the US Patent Office through an elaborate system of technology codes. A combinatorial perspective on invention, emblematic of approaches to technological change informed by evolutionary economics and complexity science, is inherent in the use of technology codes to summarize what is technologically novel about a patented invention. The technology codes represent a set of consistent definitions of technologies and their components spanning 220 years of inventive activity, and are an underutilized data resource for identifying distinct technological capabilities, defining technology spaces, marking the arrival of technological novelty, measuring technological complexity, and empirically grounding the study of technological change. The present discussion provides an introduction to the use of patent technology codes as well as some basic empirics. Our results highlight the highly discriminating nature of the codes and their usefulness in characterizing the type of processes by which technological capabilities generate novelty.