In the next 25 years, the International Organization for Migration estimates that one billion people will be displaced from their homes due to climate-related events. From island nations underwater to inland areas too hot and extreme to sustain life, the individuals and communities in these areas will need somewhere new to live. Where will these people go, and how will this mass migration add further pressure to the stability of nations and the world?

In this episode, Nate is joined by environmental and migration historian, Sunil Amrith, to explore the complex history of human movement – and what it reveals about the looming wave of climate-driven migration. Sunil explains how the historical record shows migration has always been a defining feature of human life, not an exception. Together, they examine projections for future migration trends and the urgent need for acceptance, planning, and infrastructure to support the integration of new communities.

What lessons can we draw from past environmental crises that forced people to move, and how do today’s challenges overlap or differ? How have countries historically responded to large-scale migration, and what long-term impacts did those choices have on their stability and prosperity? Ultimately, how might a more open and welcoming mindset help us face the unprecedented migrations ahead, as well as transform them into opportunities for survival, resilience, and shared thriving?

(Conversation recorded on August 14th, 2025)

About Sunil Amrith:

Sunil Amrith is the Renu and Anand Dhawan Professor of History at Yale University, with a secondary appointment as Professor at the Yale School of the Environment. He is the current Henry R. Luce Director of the Whitney and Betty MacMillan Center for International and Area Studies at Yale. Sunil’s research focuses on the movements of people and the ecological processes that have connected South and Southeast Asia, and has expanded to encompass global environmental history. He has published in the fields of environmental history, the history of migration, and the history of public health.

Sunil’s most recent book The Burning Earth, an environmental history of the modern world that foregrounds the experiences of the Global South, was named a 2024 “essential read” by The New Yorker, and a “book we love” 2024 by NPR. Additionally, Sunil’s four previous books include Unruly Waters and Crossing the Bay of Bengal: The Furies of Nature and the Fortunes of Migrants.

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In this week’s Frankly, Nate unpacks some key blindspots of “the walrus movement”—a placeholder label that's a gentle nod to those championing bold social and ecological ideals. While mostly well-intentioned, this "movement" can miss the stark limits of our planet’s unfolding biophysical reality.

What happens when lofty goals sidestep ecological and energetic realities? How might we incorporate these oversights to drive clear, purposeful action towards a (more) sustainable future? And how do we ground ourselves in biophysical truths while envisioning a system that better serves the planet and its people?

(Recorded August 11, 2025)

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Our personal concept of identity shapes every decision we make – ranging from life-altering choices to our smallest daily preferences. Identity influences our values, the relationships we build, and how we respond to an increasingly unpredictable world, whether in constructive or destructive ways. But how are these identities formed, and how might we take a more deliberate role in cultivating a healthy sense of self – and therefore a healthier way of relating to the world?

In this episode, Nate is joined by social neuroscientist Taylor Guthrie to delve into the neuroscience of identity, exploring how the brain constructs a sense of self and the implications for our modern societal challenges. They discuss the role of values and personal narrative in identity formation, the impact of technology and consumerism on self-perception, and the distinction between intrinsic and extrinsic motivation as they relate to purpose and success.

How is today’s consumer culture undermining our ability to actively participate in the development of our own identities? Could a better understanding of how we think about ourselves be key to fostering better relationships with others? Ultimately, how could purposeful reflection – about who we are and who we want to be – lead to lives that are richer in connection, community, and fulfillment?

(Conversation recorded on June 24th, 2025)

About Taylor Guthrie:

Taylor D. Guthrie, PhD, is a social cognitive neuroscientist who studies how the human brain constructs a sense of self, both individually and in relationship with others. Taylor’s work bridges neuroscience, psychology, and culture. He investigates how attention and value systems interact with brain networks to form narrative identity – and how modern cultural forces like social media, status-seeking, and consumerism can hijack this process.

Additionally, Taylor has earned the Distinguished Teaching Award from the University of Oregon. He also creates public-facing content, including The Cellular Republic, a lecture series that demystifies cognitive and social neuroscience. Now preparing for a postdoctoral fellowship in the Netherlands, Guthrie continues to explore how identity transformation – at both individual and collective levels – could support meaningful responses to today’s ecological, psychological, and cultural challenges.

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Want to learn the broad overview of The Great Simplification in 30 minutes? Watch our Animated Movie.

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