Investment in science is a pillar for any dynamic, equitable modern society, and promoting scientific literacy across all levels of society can help foster innovation, dialogue, and consensus that crosses disciplinary and cultural boundaries. Science also helps to uncover answers to foundational questions that have captivated, confounded, and divided our species for millennia. But what is “science,” and what kind of “evidence” ensures that an approach is scientific? If we take “science” to broadly mean, in its purest sense, a “dynamic search for the truth,” or more explicitly, “the pursuit and application of knowledge and understanding of the natural and social world following a systematic methodology based on evidence,” as the Science Council aptly defines it, then science extends beyond the established, highly specialized disciplines of reductionist natural sciences (physics, chemistry, biology, geoscience, and space science) that have been so successful in fostering our understanding of our planet and the cosmos. Under this definition, science also includes the rigorous data-driven (qualitative and quantitative) social sciences, the inherently non-reductionist “holistic” sciences such as ecological and Earth system sciences, and the budding interdisciplinary field of complex systems science, as well as robust traditional knowledge systems based on multi-generational experiences, observations, and reasoning. As with science, “evidence” can mean a lot of things as well, including primary research, pre-existing data, past and planned experiments, and the referencing of peer-reviewed publications and primary sources. It can also include local and traditional knowledge, thought experiments, theoretical proofs, contemplation, verifiable personal experience, and empirical observation. Broadening and weaving together these forms of scientific evidence holds the potential to address complex, interconnected global challenges and explain deep mysteries that could help unify our polarized societies around foundational understandings. Foundational Questions Foundational questions can transcend the divides of generations and cultures: Cosmology, physics, and evolutionary biology have shed...

In this InterDialogue recorded at the 17th General Conference of the World Academy of Sciences (TWAS) in October 2025, The InterPlex founder Daniel Henryk Rasolt speaks with Brazilian physicist Marcelo Knobel about his background and career trajectory, science communication, the importance of TWAS, his tenure as the Executive Director of TWAS, the current state of science in Brazil, issues of brain drain, and his own research projects, among other timely topics. In addition to serving as the current Executive Director of TWAS, Knobel is the former rector of the University of Campinas, where he fostered interdisciplinary collaborations and innovative education programs. He has also done research on what he calls “effective communication” between higher education institutions and the public, while practicing what he preaches by disseminating articles, opinion pieces, books, and a podcast intended for a non-specialized audience. He is a global leader in science communication, international and interinstitutional collaborations, and science development in the Global South. Chapters 0:00 – Introduction 2:13 – Knobel’s Background and Career Trajectory 5:37 – Scientific Censorship in Argentina under the Dictatorship 7:57 – Importance of Effective Science Communication 11:58 – Lessons from Knobel’s Science Communication Experience 14:52 – Communicating Nuance and Adaptable Communication Techniques 20:00 – Interinstitutional and Interdisciplinary Communication and Collaboration 23:45 – Fostering Interdisciplinary Collaborations at TWAS 25:54 – History, Importance, and Current Situation of TWAS 28:19 – Knobel’s Tenure as Executive Director of TWAS 30:06 – Knobel’s Vision for the Future of TWAS 31:35 – TWAS in the Global Funding Landscape 35:45 – Current Situation of Science in Brazil 37:22 – Brain Drain and the Consequences of Disinvesting in Science 39:47 – Current Situation of Science and Brain Drain in the US 41:16 – Knobel’s Current Research Projects 48:43 – Knobel’s Book and his Science Communication Efforts 50:57 – Conclusion

Earth Observation technologies are becoming increasingly valuable for understanding our changing world. They are also critical for formulating policies to protect ecosystems and support local communities. The availability of imagery taken from satellites, airplanes, and drones offers opportunities to detect deforestation, glacier melting, crop productivity, hurricane alerts, ocean temperatures, and much more. These applications have become wide-spread and are commonly featured in the news and on social media; an informed public can now be acutely aware of the significant effects that humans have on the landscape. However, other processes of land use change are too complex to be detected and understood solely from space. For example, detecting rich minerals, tracking illicit land activities (e.g., coca farming), and monitoring water salinity. For these and other complex land changes, the imagery itself might not be enough to understand the processes shaping these changes in the landscape. New ways of addressing these are needed. About 26 years ago, Jacqueline Geoghegan and her co authors wrote a chapter in the book People and Pixels: Linking Remote Sensing and Social Science, titled “Socializing the Pixel and Pixelizing the Social in Land-Use and Land-Cover Change.” This chapter was a pioneering step forward in extracting more information from images and linking them with the social processes behind them. It helped me during my PhD studies and subsequent research to develop a strategy for connecting quantitative data from pixels with social mechanisms that impact land change. But how do these two approaches work together? The full Interdialogue with Paulo Murillo. The role of classification in traditional land use science relies on how effectively we can classify elements on the land surface. Classification is the most relevant task in remote sensing. We want to classify or differentiate between forests and agricultural fields or among diverse types of crops using...

In this InterDialogue, Spanish physicist and complex systems theorist Jesús Gómez-Gardeñes speaks with The InterPlex founder Daniel Henryk Rasolt about a wide range of topics, beginning with a discussion of LANET, the Latin American Conference on Complex Networks, which he helped found. Jesús Gómez-Gardeñes is a Full Professor in the Department of Condensed Matter Physics at the University of Zaragoza in Spain, where he leads the Group of Theoretical & Applied Modeling (GOTHAM lab) at the BIFI Institute. Professor Gómez-Gardeñes has led a varied and impactful career. His research has explored topics such as collective behavior, nonlinear dynamics, evolutionary dynamics, epidemics, and theoretical biology, all from the standpoint of complex systems and network theory. He is currently organizing the 2026 CompleNet conference, to be held in Zaragoza from May 4 to 8. This dialogue ranges from Gómez-Gardeñes’s experiences as a thought leader in complex network sciences in Europe and Latin America to his work on epidemics, urban mobility, and metapopulation networks. He also touches on confronting anti-science rhetoric and the need for scientists to address misinformation by establishing effective links with the media and policymakers. The discussion concludes with an assessment of the complexity inherent to Colombia, a nation that Gómez-Gardeñes has spent much time working in, and a view toward his current and future projects. Timestamps 0:00 – Introduction 4:32 – How LANET Was Founded 8:23 – International Academic Exchange between Colombia and Europe 11:28 – The Role of Complex Networks in Interdisciplinary Collaborations 14:19 – Networking and Collaborating Through Conferences 17:17 – Building Local Capacity and Fostering International Collaborations 23:21 – Expanding Reach and Accessibility, Hybrid Courses 26:37 – Gómez-Gardeñes’s Research on Epidemics 32:33 – Metapopulation Networks 36:08 – Pivoting From Urban Mobility Research to Epidemics 41:10 – Mosquitoes as Vectors 47:03 – Socio-Behavioral Factors and Epidemic Forecasting...

Luiz Davidovich is a Brazilian theoretical physicist with vast experience working at the science-policy interface. This was our second recorded Interdialogue, and this time we met at his lovely FINAP office in Rio de Janeiro, again speaking in depth about the importance of investing in science in both the developing and developed world.  In our wide-ranging conversation, we also ventured into foundational questions about the quantum world and the nature of reality, with a focus on his personal research in quantum metrology. Furthermore, we spoke about some timely recent projects with FINEP focused on bioeconomics, sustainable development and the conservation of the Amazon rainforest. Davidovich is the former president of the Brazilian Academy of Sciences, as well as the former secretary general of The World Academy of Sciences (TWAS). He is the recent recipient of the prestigious TWAS Apex award for his work in quantum optics and quantum information, and for promoting fundamental scientific research, globally.  Chapters 0:00:00 – Introduction 00:02:02 – The improving state of scientific investment in Brazil 00:12:20 – Current roles and projects for fostering scientific research 00:17:31 – The Amazon and bioeconomics 00:28:28 – The importance of intercultural collaboration, mutual respect and knowledge sharing between scientists and Indigenous peoples 00:41:47 – The importance of funding science, technology and innovation in Brazil 00:47:08 – Interrelated theoretical and experimental research into quantum systems interacting with the environment 00:57:03 – What is quantum metrology? 01:02:12 – The fun of doing scientific research and the social responsibility of fostering science 01:04:19 – Quantum computing, artificial intelligence and energy 01:13:58 – General AI, quantum entanglement and consciousness 01:19:03 – The dangers of anti-science, pseudoscience, misinformation and inequality, and the importance of effective scientific communication and engaging early science education

Ingo Allekotte is an Argentinian physicist who is currently the Project Manager of the Pierre Auger Cosmic Ray Observatory, the world’s largest cosmic ray observatory at approximately 3,000 square kilometers in area. He is also an Associate Professor at the Balseiro Institute in Bariloche, within beautiful Patagonia, and a researcher at the National Atomic Energy Commision of Argentina (CNEA). In our Interdialogue, we spoke about Cosmic Rays – what they are, the fascinating decades-long history of their detections, the risks that they pose for space travel, and the intersection between cosmic ray astrophysics, particle physics and even cosmology.  We then spoke more specifically about the Pierre Auger Cosmic Ray Observatory and how this interdisciplinary “Big Science” project in Argentina, which incorporates hundreds of scientists from 17 different countries, came to be. Ingo explained some of the exciting discoveries made so far of Ultra High Energy Cosmic Rays (UHECRs), and how they have conclusively demonstrated extragalactic origins. We also spoke about future exciting research objectives, parallel lines of research and Multi-Messenger astronomy. We concluded our conversation by focusing on science advocacy and the wide-ranging social value of large scientific collaborations like Pierre Auger, while also touching on the importance of maintaining balance and perspective in life by frequently connecting with nature, family and friends. Chapters 00:00:00 Introduction 00:09:19 – The intersection of cosmic ray astrophysics, particle physics and cosmology 00:19:57 – The importance of Earth’s atmosphere in shielding us from cosmic rays: subatomic particle showers, the evolution of life and the risks of space travel 00:26:24 – Observing “low energy” cosmic rays from the sun to ultra-high energy cosmic rays from extragalactic sources 00:34:18 – The Pierre Auger Observatory: history, design, collaborative structure and objectives 00:49:51 – Personal involvement with Pierre Auger and research interests in physics 00:57:09 – Beyond our...