This MIT Learn podcast, hosted by Dr. Daniel Braconnier, covers the intersection of science, policy, and design with the people that know where these topics affect you.
Nothing is ever too big to understand, because in more ways than you might think - that something is connected to us. The “Why THIS Matters” podcast explores these somethings, with the people that work to define them. Listen in to learn and think differently about the ways in which science, policy, and design define the structural underpinnings of our world. Do you know why this matters?
Why THIS Matters is an MIT Learn Podcast that you can watch and listen to! Check out the video recording here: https://bit.ly/MITwhythismatters
Dr. Andres Sevtsuk and Dr. Daniel Braconnier chat about urban planning strategies to promote sustainable mobility by shifting away from convincing individuals to change their behavior and instead focusing on constructing environments that naturally lead people to walk, ride transit, and use public transportation without acting against their own will or desire.
This episode highlights three critical goals achieved when cities are designed to be walkable and transit-oriented: (1) tackling climate change and global warming by reducing greenhouse gas emissions, CO2 output, and energy consumption in sectors responsible for the majority of pollution; (2) improving public health by encouraging daily physical activity to prevent obesity, cardiovascular diseases, respiratory issues associated with inactive lifestyles, reducing societal costs related to these conditions, and allowing individuals to use bodies evolved for movement; and (3) fostering democracy through face-to-face encounters on streets or public transit that expose residents to diverse populations, such as homeless individuals or children playing ball, enabling citizens to reappraise societal needs beyond their own immediate circles and vote for policies benefiting the whole society rather than just like-minded groups.
Andres emphasizes that achieving these goals simultaneously requires building cities where people self-select sustainable modes of transport automatically, a concept reinforced as essential for modern urban development.
Why THIS Matters is an MIT Learn Podcast that you can watch and listen to! Check out the video recording here: https://bit.ly/MITwhythismatters (https://bit.ly/MITwhythismatters)
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Watch Why THIS Matters! (https://why-this-matters.captivate.fm/mitlearnvideo)
12 Oct 2026
Ethical Engineers with Peter Hansen
Dr. Peter Hansen and Dr. Daniel Braconnier discuss why it matters for engineers to think ethically and how ethical engineering can be approached through Aristotle's philosophy, particularly focusing on happiness being related to virtue rather than just pleasure or honor.
This episode emphasizes that while science provides factual knowledge about phenomena like quantum mechanics and other natural laws, it does not address how people should behave, or what is truly good to do, thereby leaving a gap for moral reasoning. Drawing parallels between Aristotle's view on virtue ethics (where happiness comes from living virtuously) with the current state of Western society, Peter argues that without ethical guidance, individuals may lack clear direction in making decisions about right and wrong actions affecting others' lives. A notably recent example can be made of the actions of Sam Bankman-Fried.
Peter encourages engineers to think beyond technical skills towards moral reasoning when designing systems or solutions for real-world problems involving people's well-being. He also mentions how modern science doesn't provide answers on what should be done but leaves room open for philosophical reflection, which is why it matters for both personal growth and societal impact.
Why THIS Matters is an MIT Learn Podcast, continue to learn more at: https://learn.mit.edu/ (https://learn.mit.edu/)
14 Sept 2026
Learning on the Job with Beth Unger
Dr. Beth Unger and Dr. Daniel Braconnier discuss the importance of workforce development and how it impacts both workers and companies. this episode highlights the role of communication skills, such as troubleshooting and process control, in helping companies find the right talent. Beth shares her experience in researching workforce development and the impact of inspiring and valuing workers. She emphasizes that when workers feel inspired and valued, they are more productive and contribute to company success. This episode also discusses the importance of creating pathways that are non-linear, allowing individuals to transition into different fields. Why THIS Matters is an MIT Learn Podcast, continue to learn more at: https://learn.mit.edu/
10 Aug 2026
The Written Conversation of Science with Adrienne Tierney
Dr. Adrienne Tierney and Dr. Daniel Braconnier discuss the importance of writing in the scientific process, emphasizing that writing is not just a final step but a valuable tool for thinking and learning. The conversation highlights that writing can be a thought partner, helping to build and move one's own thinking forward. Adrienne invites listeners to consider writing as a way to support their thinking, rather than just a procedural task. This episode also addresses common misconceptions about writing, such as the idea that it has to be hard or that it's something you have to do at the end. Writing and thinking go hand in hand, and using writing as a way to support ones thinking will encourage cultivating a writing practice alongside other scientific work, which can make the process easier and more enjoyable. Why THIS Matters is an MIT Learn Podcast, continue to learn more at: https://learn.mit.edu/
13 Jul 2026
Shaping Neighborhoods with Jeff Levine
Jeff Levine, FAICP and Dr. Daniel Braconnier discuss the importance of zoning in shaping neighborhoods and the role of planners in influencing land use. The conversation explores how zoning affects daily life, community feelings, and the environment, emphasizing the need for thoughtful planning. Jeff Levine highlights the impact of zoning on things like access to essential services, the presence of community spaces, and the overall quality of life. This episode also touches on the responsibilities of planners and the importance of considering residents' experiences when making zoning decisions. Why THIS Matters is an MIT Learn Podcast, continue to learn more at: https://learn.mit.edu/
8 Jun 2026
The Electrical Grid and Beyond with David Hsu
Dr. Daniel Braconnier discusses with Dr. David Hsu about the importance of understanding the electrical grid and its role in the future of energy systems. It explores the complexity of the grid, its historical development, and the challenges and opportunities it presents. This Why THIS Matters episode highlights the inter-dependencies between different energy sources and the need for a coordinated approach to managing the grid. It also addresses common misconceptions about the grid, such as thinking it is a unitary object or separate from other systems. The episode concludes by emphasizing the significance of the grid in the context of climate change and the need for a comprehensive understanding of how the grid is built and how it can be changed to achieve future goals. Why THIS Matters is an MIT Learn Podcast, continue to learn more at: https://learn.mit.edu/
11 May 2026
Automation in Manufacturing with Ben Armstrong
Dr. Daniel Braconnier chats with Dr. Ben Armstrong about the importance of manufacturing in the context of innovation and competitiveness. This conversation highlights the need for a balance between precision and flexibility, emphasizing that while some manufacturing focuses on producing identical products (often referred to as "copy exactly" manufacturing), there is also a need for continuous improvement and adaptability. This discussion includes examples like Tesla's approach to innovation and flexibility in production processes. Why THIS Matters is an MIT Learn Podcast, continue to learn more at: https://learn.mit.edu/
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