Can seaweed be the solution to our land problems?

By Neema Tavakolian, 2021 IIASA Science Communication Fellow

Young Scientists Summer Program (YSSP) participant Scott Spillias explores how the adoption of offshore seaweed farming could affect land use.

Seaweed farming in the clear coastal waters of Zanzibar island © Ecophoto | Dreamstime.com

Since the start of the industrial revolution, the Earth’s population has grown exponentially, and it is still growing every year. In addition to heavy population growth, human advances in medicine, science, and technology have allowed people to live longer lives as well. As more countries industrialize, the demand for land extensive commodities like meat and dairy have also increased. Deforestation has risen worldwide making way for cattle and other livestock grazing, and more of the food we grow is being dedicated towards livestock rather than human consumption.

With problems like unsustainable land use, climate change, and suburban sprawls in places like the United States and Australia decreasing available arable lands, this poses the question: is there any way we can feed a growing population without further damaging ecosystems and contributing to climate change? In addition to achieving this goal, we simultaneously want to promote equitable and just societies. 2021 YSSP participant Scott Spillias believes he might have a solution: seaweed.

Spillias has a background in marine biology and sailing. After years of sailing the world, he could see the alarming state of our oceans. Wanting to be part of the solution, he moved to Australia to study oceanic food systems, environmental economics, and environmental decision making at the University of Queensland.

Scott Spillias © Scott Spillias

“We live on an ocean planet, yet almost all of the food we grow comes from land. When it comes to the sea, we are essentially just unsustainably hunting and gathering from our oceans. I want to know what it would look like if instead, we tried to farm them,” Spillias explains.

Spillias says that seaweed as an agricultural product is already useful with its range of uses including food, livestock feed, fuel, fertilizer, and multiple products in the form of hydrocolloids. Hydrocolloids, more commonly known as “gums”, are extracted from plants like seaweeds and algae; they are used as setting and thickening agents in a variety of products including foods and pharmaceuticals, often increasing shelf life and quality.

A University of California, Davis study found that incorporating seaweed in cattle feed could reduce methane emissions from beef cattle by as much as 82%. Moreover, seaweed’s broad range of uses can hypothetically decrease land usage in favor of sea usage. Seaweeds also serve many ecological roles such as filtering ocean waters, serving as nurseries for small fish and crustaceans, and protecting sea floors.

There are two types of seaweed farming in use today. In parts of China, South Korea, and Japan there is floating offshore seaweed production, where the seaweed is grown and harvested while floating in deep waters. Another form of seaweed farming seen in Indonesia, Tanzania, and the Philippines involves a different approach, where the seaweed is grown and farmed closer to the coast in shallower waters, or the intertidal zone. Both provide ecosystem services, jobs, and food for local populations.

As part of his YSSP project this summer, Spillias hopes to use the IIASA Global Biosphere Management Model (GLOBIOM) to determine land-use changes brought about by large-scale seaweed production.

“We are going to assume that the seaweeds we are growing will be for food, feed, and fuel. We are also taking certain constraints into consideration, such as the inability to place seaweed farms in high traffic shipping areas or marine protected zones. Getting rough estimates of seaweed production can then give us an idea of land commodities we can replace, for instance, corn used for biofuel,” he says.

Spillias hopes that this research can provide results that can influence policy.

“Locally, seaweed farming will either be beneficial or destructive – it depends on where you put it and how you do it. Zooming out and understanding how these tradeoffs relate to terrestrial production will give policymakers a clearer idea of whether to promote or restrict the practice.”

Note: This article gives the views of the author, and not the position of the Nexus blog, nor of the International Institute for Applied Systems Analysis.

Restructuring the food system after COVID-19

By Husam Ibrahim, International Science Council (ISC)

The IIASA-ISC Resilient Food Systems report looks at the vulnerabilities in the food system and recommends changes to move forward through COVID-19 recovery plans that prioritize society’s least protected.

Credit: Adam Islaam – IIASA

The COVID-19 pandemic has amplified and brought to the fore existing vulnerabilities and global interdependency in societal institutions, including the food system. The pandemic has exaggerated the scarcity in some areas’ food supplies and highlighted the divide between the haves and have-nots.

The number of people suffering from poverty had been on a steady decline, going from 2 billion people in 1990 to 740 million in 2015. However, for the first time in decades, the global poverty rate is once again increasing due to the pandemic. Early estimates suggest that an additional 88 million to 115 million people may suffer extreme poverty, with the total rising to as many as 150 million by 2021.

The socioeconomic impacts of the pandemic are further exacerbating inequalities within and between  countries, and intensifying the rise in food insecurity observed since 2014. It has been estimated that the effects of the pandemic could have longer-term repercussion for low-income countries, greatly undermining their development prospects, unless sufficient international support is provided.

In order to explore how the world can recover from the crisis sustainably, IIASA and the International Science Council (ISC) launched the Consultative Science Platform: Bouncing Forward Sustainably Post COVID-19. The two organizations have drawn on their combined strengths, expertise, and large scientific communities, to come up with a set of insights and recommendations based on a series of online consultations that have brought together over 200 experts from all regions of the world. The Resilient Food Systems report is a contribution to this effort.

Resilient Food Systems

Transformations within reach:
Pathways to a sustainable and resilient world

 

 

 


While the pandemic exerted supply and demand shocks across economic sectors, the report highlights that the food system was particularly affected by impacts on employment and income in relation. This is because international food supply has been strong, and the supply-demand ratios have remained stable throughout the pandemic. However, job and income losses, insufficient safety nets, and constraints on local access to food created conditions for food insecurity.

Lack of access to basic services, such as water and sanitation, and the prevalence of informal employment, have forced many people in low- and middle-income countries to make the impossible choice between following physical distancing measures or maintaining basic income and access to food. Before the pandemic, an estimated 3 billion people were unable to afford a healthy diet on a consistent basis.

Therefore, the report argues that the emphasis on efficiency – which has in large part been driving the evolution of food systems – must be balanced with an emphasis on concerns related to resilience and equity. With this, the food system can combat future crises while serving society’s most vulnerable. The recovery process should be harnessed to strengthen the preparedness of the food system to manage multiple risks.

As highlighted by the pandemic, this would entail expanding the scope and reach of social safety nets and protection schemes. Future food systems should be characterized by better pricing-in of environmental externalities. The sustainable management of natural resources should be seen as an integral part of strengthening the resilience of food systems, recognizing also the close linkage between human and planetary health concerns.

‘ In light of resilience and sustainability concerns the focus should be on using agricultural areas that we already have, rehabilitating degraded environments, and looking into the potential of diversification of practices and technologies.’

Frank Sperling, Senior Project Manager, IIASA

The role of different agricultural practices in building resilience needs to be looked into. This includes high-tech solutions like biotechnology, as well as an increase in the trade of agricultural goods, a sustainable increase in crop yields, and using underutilized crops to their full potential.

This also means protecting biological diversity, minimizing the destruction of pristine natural environments and focusing on the regeneration of natural ecosystems.

The report also states that strong international institutions are necessary to coordinate policies and limit tensions between multiple social, economic, and environmental interests represented within food systems internationally. Further funding, integration, and emphasis on context-specific solutions can help make changes, and emerging action-oriented knowledge and funding platforms are being used to help transform the food systems.

‘It is very important that these reforms are characterized by global collaboration, keeping nutritional security at the forefront with society’s most vulnerable people in mind, so that no one gets left behind.’

Frank Sperling, Senior Project Manager, IIASA

For more information on how COVID-19 is impacting the food system, and the lessons learned from the pandemic, read the IIASA-ISC Resilient Food Systems Report.


You can also watch the discussion on Strengthening Science Systems as part of the launch event for the Bouncing Forward Sustainably: Pathways to a post-COVID World, which explores the key themes of Sustainable Energy, Governance for Sustainability, Strengthening Science Systems and Resilient Food Systems.

This blog post was first published on the website of the International Science Council. Read the original article here.

Note: This article gives the views of the author, and not the position of the Nexus blog, nor of the International Institute for Applied Systems Analysis.

Enhancing science systems and bouncing forward sustainably from COVID-19

By Husam Ibrahim, International Science Council (ISC)

The IIASA-ISC Consultative Science platform has engaged transdisciplinary global thought leaders to produce four reports that focus on a more sustainable pathway to a post COVID-19 world. This blog post looks at the report on Strengthening Science Systems.

Credit: Adam Islaam – IIASA

Science has spoken reason to power and politics, expanded open science practices, and found a vaccine in record time during this pandemic, yet perceptions of how science has responded overall to the current crisis still vary. There is a broad consensus that there is considerable room for improvement in science systems in the general context of rapidly evolving global exogenous shocks.

“The COVID-19 pandemic is a cautionary tale about the importance and necessity of science: we will face crisis, we know that, and we will best address it through science, but science itself stumbles along and science needs to be more humble, be better educated and not only communicate their knowledge but also communicate the limitation of their knowledge so that science systems can move towards a better frontier.”

– David Kaplan, Senior Research Specialist, ISC 

In 2020, IIASA and the International Science Council (ISC) combined their strengths and expertise to define and design sustainability pathways that will help all levels of global governance be better prepared and more resilient in protecting from future systemic shocks.

In these testing times, policymakers and the general public have looked to science for insight, reliable solutions, and actionable advice. The Strengthening Science Systems report addresses how science systems can be better prepared when an inevitable crisis hits again.

The report puts forward a large number of recommendations, grouped under five interrelated major transformative changes:

Strengthen transdisciplinary research and networking on critical risks and systems resilience

As seen with the COVID-19 pandemic, risks can spread globally regardless of their origin. It is in the interests of all countries to work together and provide support to one another. Most notably, developed countries need to help further strengthen scientific capacities with financial support, technology support and technology transfer for developing countries.

On the other hand, while risks may be global, the manner in which they play out and particularly the way in which different societies respond, show considerable variation. Local scientific capacity has the ability to address the local context and develop effective strategies to address risk. This will allow local scientists to put knowledge on disaster risks at the core of disaster risk reduction policies.

Enhance communication of scientific knowledge, public understanding, and trust in science

Trust in science and in the recommendations emanating from scientists are key to the effectiveness of science-based policies. This is especially important as science denial and misinformation have increased during the pandemic. Communication, transparency, and broad public understanding of how science works are three foundations which will enhance trust in science.

Scientists themselves should therefore be incentivized to play a more active role in combating misinformation in their fields, as they are best equipped with the facts. Alongside that, easily accessible sources of scientific results that are simpler for a mass audience to understand should be created in a wider array of languages.

Enhance knowledge diffusion within the science system

Peer-review systems have been shown to be somewhat inadequate in the face of the COVID-19 pandemic. Peer-review systems need to be more agile, international, rigorous, and inclusive in terms of access and avoiding bias if science is to meet the challenges of future crises.

International organizations of science, including the ISC and UNESCO, can take a lead in devising a more effective system of peer review through dialogue with international disciplinary bodies, national academies, publishers, and national research councils.

Increase the capacity of the science system to respond rapidly to crises with high-quality research

Some countries lack adequate disaster research institutions. These institutes cannot be created in a short period of time and need prior infrastructural efforts, so there needs to be ample support and funding of smaller research institutions in advance of possible disasters. Collaborative efforts between big and small research institutes on a global and local scale are highly recommended. Governments also need researchers who can be on standby and they need to allocate funds that are easy to access during a crisis.

Improve the quality and efficacy of science-policy interfaces at national, regional, and global levels

Science advice has moved to center stage when dealing with policies to respond to the COVID-19 pandemic, which has challenged national science–policy systems. Lessons have been learned about how science can become a more effective input into policy. This involves further international scientific cooperation among institutions engaged in science-policy advice, to enhance the quality of science inputs to policy.

International collaboration allows for sharing of evidence and the emergence of a scientific consensus. This consensus can then be communicated to policymakers who, in turn, need to interact more with the wider academic community to systematically review their country’s policies.

These are some of the conclusions from the five lessons on interrelated transformative changes for the science system cited in the report. They show three axes of improvement that are required to ensure that science can react more efficiently to such exogenous shocks: increased agility, enhanced reliability, and a more effective science-policy-society interface. The main overarching objective is to simultaneously improve all three axes, thereby moving science systems to a new frontier.


Strengthening Science Systems

Read the full report

Read the one-page summary

 

You can also watch the discussion on Strengthening Science Systems as part of the launch event for the Bouncing Forward Sustainably: Pathways to a post-COVID World, which explores the key themes of Sustainable Energy, Governance for Sustainability, Strengthening Science Systems and Resilient Food Systems.

 

This blog post was first published on the website of the International Science Council. Read the original article here.

Note: This article gives the views of the author, and not the position of the Nexus blog, nor of the International Institute for Applied Systems Analysis.

Learning from COVID-19 and upgrading sustainable governance

By Husam Ibrahim, International Science Council (ISC)

The IIASA-ISC Enhancing Governance for Sustainability Report identifies the lessons learnt from the ongoing COVID-19 pandemic in relation to upgrading risk governance.

Credit: Adam Islaam – IIASA

As some governments and their administrations, individuals, and science systems begin to adapt to COVID-19, the struggle still continues in many countries. With that, the world is slowly leveraging the insights this pandemic has offered, standing at the cusp of a new world, which faces multiple stressors and is in need of more resilient governance.

Globally, national governments were put under the microscope. Some, such as Singapore and South Korea, succeeded with evidence-based, swift national leadership coupled with clear crisis communication. This proved useful for containing the spread of the COVID-19 virus and with it brought necessary recovery initiatives. In other countries, such as the United States, tackling the crisis has been characterized by governance challenges, including crisis plans with layers of shared responsibility being ignored in favor of “management by panic” approaches.

The pandemic has highlighted the flaws of neoliberal governance that prioritizes economic growth, deregulation and a separation between people and nature ahead of policies centered around human and ecosystem health and wellbeing.

To this effect, the IIASA-ISC Enhancing Governance for Sustainability Report goes beyond just considering the roles and responsibilities of governments, and adopts a broader definition of governance as, “the totality of actors, rules, conventions, processes, and mechanisms concerned with how relevant…information is collected, analyzed and communicated, and how management decisions are taken”.

In a world confronted with future risks such as spiraling climate change, ecosystem collapse and dwindling resources, global governance needs to be reformed.

The report states that the global community needs to engage in multi-directional and more integrated learning, problem identification and decision making. This should enable the shift towards more sustainable and equitable development in an ever-riskier world.

A disease with no respect for borders requires a collective response, said Volkan Bozkir, President of the United Nations General Assembly, adding that, “COVID-19 is a practice test that exhibits our weaknesses; we must build resilience now for whatever comes tomorrow.”

The pandemic highlighted widespread global fragmentation, which was initially observed through uncoordinated and sometimes competing actions. The report explains that organizations and agencies with similar objectives fought over resources, when instead they should have been bridging their divides and working cooperatively to eliminate competition. In the meantime, as the divide is bridged, special crisis provisions should be established for activation in case urgent action is needed again.

The report also recommends strengthening science–policy interactions to enable evidence-based decision-making, in which science systems collaborate with governments at all governance levels. Global and regional collaboration is especially important given the uneven scientific capabilities across countries and the need to tackle the pandemic everywhere to achieve health outcomes for all.

Working effectively at the interface of science and policy has been a challenge for many countries, which warrants further investigation. However, scientists have tried to step up to the challenges in some unprecedented ways.

For example, online repositories started publishing COVID-19 studies as pre-prints so that their findings could be used by all scientists quickly. As a result, researchers have identified and shared hundreds of viral genome sequences, and several hundreds of clinical trials have been launched, bringing together hospitals and laboratories around the globe.

Mukhisa Kituyi, the Secretary-General of the United Nations Conference on Trade and Development, referred to international scientific collaboration in reference to COVID-19, as the “engine of global science” and said, “It is thus crucial that scientific responses are based on international collaboration that brings together the best minds and available data from different countries for the benefit of all”

Therefore, to reform global governance, evidence-sharing arrangements need to be centered on a global level with reliable evidence, which must be made available swiftly in times of crises. In order for this to happen, the report recommends the creation of specialized advisory bodies that offer consultations on a regular and on-demand basis. The report also suggests involving diverse stakeholder perspectives in these consultations.

Another key point to enhancing sustainable governance is risk reduction management, which should be a fundamental component of decision-making and a part of the investment in sustainable development. The report states that a global socio-ecological resilience and risk dialogue should be launched, engaging policymakers, civil society, the private sector, and the scientific community in mapping risks and their drivers at different scales and discussing their implications for risk governance, prevention and preparedness. Such an engagement process would increase the understanding and communication of the compound, systemic nature of risks driven by infectious diseases, climate change, and other socio-ecological stressors.

“A more holistic approach to risk that better takes into account the many intricate links between nature and people is sorely needed if we are to achieve the Sustainable Development Goals.”

– Anne-Sophie Stevance, ISC

Unifying fragmented global organizations and governance, forming scientific evidence-based policies with the help of science systems, and enhancing levers pertaining to risk management are only some of the recommendations in the report. For more information on upgrading risk governance read the IIASA-ISC Enhancing Governance for Sustainability Report.

You can also watch the discussion on Learning from COVID-19 and upgrading sustainable governance as part of the launch event for the Bouncing Forward Sustainably: Pathways to a post-COVID World initiative, which explores the key themes of Sustainable Energy, Governance for Sustainability, Strengthening Science Systems, and Resilient Food Systems.

 

This blog post was first published on the website of the International Science Council. Read the original article here.

Note: This article gives the views of the author, and not the position of the Nexus blog, nor of the International Institute for Applied Systems Analysis.

A story of new beginnings

By Marie Franquin, External Relations Officer in the IIASA Communications and External Relations Department

Marie Franquin writes about her first six months as part of the IIASA Communications and External Relations team.

This year has certainly been a great challenge for all of us, migrating our lives online and our offices to the living-room. Last summer, I finished my PhD and was ecstatic to have found a job at IIASA that encompassed day-to-day work on my favorite skills: international stakeholder engagement, policy interface, and interacting with researchers, including early career ones!

All of these aspects were covered in the newly launched 2021-2030 IIASA Strategy that was published in the winter. My challenge remained to know how I could best apply my science to policy and research skills to contribute to these goals. How do I help a systems analysis research community move towards more impact and increasing stakeholder engagement?

It quickly became obvious that my position in the external relations team required multitasking and honing a series of skills. The first and top skill that I have kept developing for the past six months was interacting with international stakeholders from all over the world, which included not only our National Member Organization (NMO) representatives and researchers from these countries, but also IIASA researchers and alumni. Working at IIASA I have already gained experience in developing relationships with stakeholders of the research community all over the world.

© Swietlana Malyszewa | Dreamstime.com

The IIASA stakeholder community also sheds new light on the value of the institute’s expertise in systems analysis for building international scientific partnerships, whether it be formal ones with my colleague Sergey Sizov and his science diplomacy expertise, or by facilitating research partnerships between our NMO countries and IIASA researchers.

With my colleague Monika Bauer, I am also learning about the future of stakeholder engagement and how to build virtual communities, like she’s doing with IIASA Connect:

“We are building the global systems analysis network on IIASA Connect. This tool allows colleagues, alumni, the institute’s regional communities, and collaborators to directly engage with each other and take advantage of the institute’s international and interdisciplinary network. It is something completely new for the organization,” she explains.

Our recent partnership with the Strategic Initiatives (SI) Program was aimed at better understanding the IIASA NMO countries and their individual research priorities for the next decades. I learned about local challenges and strengths and how countries have managed to move forward as a nation or by working hand in hand with their neighbors.

Coming from a research background, I am fascinated by the insights I am gaining working with IIASA communications colleagues on how to promote research and its impacts. I particularly enjoyed working with Ansa Heyl, helping IIASA experts build their policy brief submissions for the recent T20 Italy call for abstracts. As part of my skillset and center of interest, I aim to apply my science to policy skills here at IIASA to support the researchers and impacts of the amazing work done across the institute.

Having mostly worked with and for early career researchers for several years, I remain sensitive to their needs for career development opportunities. I am therefore excited to work with colleagues in the institute’s Capacity Development and Academic Training (CDAT) program to further define and support research excellence at IIASA, especially in the very promising next generation of systems scientists.

Few workplaces are so well connected and offer so many opportunities to develop such a broad range of skills as the IIASA Communications and External Relations team. As we are working towards fulfilling the IIASA Strategy’s aim of strengthening partnerships, I look forward to continuing to interact with IIASA researchers and supporting the institute’s goals of making sure the work done at IIASA positively impacts society. So come and chat with me!

Note: This article gives the views of the author, and not the position of the Nexus blog, nor of the International Institute for Applied Systems Analysis.

How to advance climate policies towards a low-carbon economy

By Shorouk Elkobros, IIASA Science Communication Fellow

Assessing energy-related choices and the behaviors of households can help us transition to a low-carbon economy. How can research provide more effective decision-making tools to policymakers for better climate change mitigation policies?

We live at a defining moment for climate change, where today’s actions affect tomorrow’s reality. Every little climate-friendly decision counts. Whether we decide to insulate our houses, put solar panels on our rooftops, or invest in energy-efficient appliances. However, our personal and energy-related decisions vary based on our awareness, age, education, income, energy provider services, social norms, culture, and many other factors. Researchers are starting to pay attention to how this diversity is not well represented in the economic models that politicians use to plan climate change policies.

@ VectorMine | Dreamstime.com

Designing policies inspired by people

Households contribute an average of 70% of global greenhouse gas emissions. Limiting global emissions requires holistic policy approaches that take households’ behaviors and lifestyle decisions into account. Adding such a dimension can potentially upscale low carbon behavioral and social changes to national and global levels, which is fundamental to tackling climate change.

Worried about the future of the planet and motivated to support policymakers in designing better climate change mitigation policies, the authors of a recent study published in the journal Environmental Modeling & Software aspired to build bridges through interdisciplinary research. The study presented a novel interdisciplinary method that aims to integrate households’ energy behavior and social dynamics in climate-energy-economy models and thus help politicians design policies inspired by people.

“I have always been interested in the science-policy-society aspect of mitigating climate change. Climate change is a collective challenge that we need to address together to come up with better solutions for future generations,” notes study lead author Leila Niamir, a researcher jointly associated with the Mercator Research Institute on Global Commons and Climate Change, Berlin and the IIASA Transitions to New Technologies Program.

Better models for a better future

Climate change mitigation policies play a pivotal role in achieving ambitious environmental targets like the Paris Agreement or the Sustainable Development Goals (SDGs). To be able to formulate appropriate mitigation policies, decision makers need assessment tools to measure complex systems quantitatively. In the past decade, a variety of assessment tools have emerged, which have since been predominantly used to support climate change policy debates. In the study, Niamir argues that current assessment models are missing bottom-up and grassroots dynamics, they cannot project realistic variables of what households’ lifestyles and social movement are, and they therefore may not be sufficient to provide reliable information for policymakers.

There is a gap between what policymakers’ current assessment tools can offer and what social scientists and behavioral economists highlight as pro-environmental behavior and climate change mitigation movements. By adding this complex behavior and social perspective to the models, the researchers make it easier for policymakers to design future policies to accommodate different societal behaviors and lifestyles.

Niamir and her team presented a novel method for systematically upscaling grassroots dynamics by linking the best of both “top-down” macroeconomic computable general equilibrium (CGE) models and “bottom-up” empirical agent-based models (ABM). Their approach demonstrates that with computational ABM directly linked to survey data and macroeconomic CGE models, individual behavioral diversity and social influences can be considered when designing implementable and politically feasible policy options.

“We need better assessment tools to quantitatively explore the complex climate-energy-economy system, and reveal the potential of demand-side mitigation strategies. To see substantial changes, we need a mix of external interventions, from soft information policies aimed at raising awareness bottom-up, to financial incentives altering the macro landscape of energy markets and technological transitions. Only modular and integrated models can help policymakers quantitatively explore this complex system and plan for changes in the coming decades,” says Niamir.

Towards a low-carbon economy

We cannot tackle what we do not know. Pathways to a low-carbon economy future entail diminishing the growing discrepancy between mitigation policies and individual and collective behaviors. When redesigning our socio-environmental systems to mitigate climate change, we need to start looking at people as case studies rather than numbers. To transition to a low-carbon economy and accelerate decarbonization, policymakers must adopt novel models that integrate energy consumption, individual behavior, heterogeneity, and social influence into current assessment tools.

In 2019, IIASA and the Research Institute of Innovative Technology for the Earth (RITE), Japan co-organized an international workshop towards improved understanding, concepts, policies, and models of energy demand, where Niamir presented her research and received the young scientist award to continue and extend her research.

“Mitigating climate change indeed requires a massive effort from individual and social movements to advance national and international collaboration. Each individual small step towards shrinking our carbon footprint creates cascading changes in social behavior and consequently mitigates climate change,” Niamir concludes.

Reference:

Niamir L, Ivanova O, & Filatova T (2020). Economy-wide impacts of behavioral climate change mitigation: linking agent-based and computable general equilibrium models. Environmental Modelling & Software 134: e104839. [pure.iiasa.ac.at/16671]

Note: This article gives the views of the authors, and not the position of the Nexus blog, nor of the International Institute for Applied Systems Analysis.