Will Coral Reefs Be Gone by 2050? How Bleaching, Acidification, and Ocean Heating are Killing Coral Reefs with Ove Hoegh-Guldberg
The Great Simplification with Nate Hagens
Release Date: 10/15/2025
Directional Advice for the (More Than) Human Predicament | Frankly 114
The Great Simplification with Nate Hagens
Over the past decade, the world has become increasingly chaotic and uncertain – and so, too, has our cultural vision for the future. While the events we face now may feel unprecedented, they are rooted in much deeper patterns, which humanity has been playing out for millennia. If we take the time to understand past trends, we can also employ practices and philosophies that might counteract them – such as focusing on kinship, intimacy, and resilience – to help pave the way for a better future. How might we nurture the foundations of a different kind of society, even while the end of...
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Two Ways of Knowing: How Merging Science & Indigenous Wisdom Fuels New Discoveries with Rosa Vásquez Espinoza
The Great Simplification with Nate Hagens
For centuries, modern science has relied on the scientific method to better understand the world around us. While helpful in many contexts, the scientific method is also objective, controlled, and reductionist – often breaking down complex systems into smaller parts for analysis and isolating subjects to test hypotheses. In contrast, indigenous wisdom is deeply contextual, rooted in lived experience, and emphasizes a reciprocal, integrated relationship with the rest of the natural world, viewing all parts of the system as interconnected. What becomes possible when we combine the strengths of...
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11 Discoveries That Changed My Worldview | Frankly 113
The Great Simplification with Nate Hagens
In this episode, Nate weaves personal reflections into an exploration of the human predicament, unpacking a series of chronological insights that have reshaped his worldview. What began years ago as an investigation into oil has morphed into a deep lifelong journey into the complex web of energy, psychology, evolution, and systems that drive today's society. By sharing stories and realizations from his own life, whether it’s the debunking of Wall Street energy illusions or unpacking how sexual selection is often as important a behavioral driver as natural selection, Nate invites listeners to...
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Will We Artificially Cool the Planet? The Science and Politics of Geoengineering with Ted Parson
The Great Simplification with Nate Hagens
Global heating continues, despite the increased use of renewable energy sources and international policies attempting otherwise. Even as emissions reduction efforts continue, our world faces more extreme weather, sea level rise, and human health impacts, all of which are projected to accelerate in the coming decades. This raises an important but controversial question: at what point might more drastic interventions, like geoengineering, become necessary in order to cool the planet? In this episode, Nate interviews Professor Ted Parson about solar geoengineering (specifically stratospheric...
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Hacking Human Attachment: The Loneliness Crisis, Cognitive Atrophy and other Personal Dangers of AI | RR 20
The Great Simplification with Nate Hagens
Mainstream conversations about artificial intelligence tend to center around the technology’s economic and large-scale impacts. Yet it’s at the individual level where we’re seeing AI’s most potent effects, and they may not be what you think. Even in the limited time that AI chatbots have been publicly available (like Claude, ChatGPT, Perplexity, etc.), studies show that our increasing reliance on them wears down our ability to think and communicate effectively, and even erodes our capacity to nurture healthy attachments to others. In essence, AI is atrophying the skills that sit at the...
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The Quadruple Bifurcation | Frankly 112
The Great Simplification with Nate Hagens
In this week’s Frankly, Nate outlines four bifurcations that are likely to underpin the human experience in the near future. While the broad biophysical realities of energy and ecology underpin our civilization’s movement over time, in the moment, people will experience these trends mostly economically and psychologically. Whether related to the widening of an already existing economic gap or the expansion of dependence on cognitive crutches like AI, the demographics that comprise society are starting to splinter – to bifurcate. These divergences, and the ways we cope with them,...
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Terror Management Theory: How Existential Dread Has Shaped the World with Sheldon Solomon
The Great Simplification with Nate Hagens
Many of us wrestle with the unsettling truth that everyone – including ourselves and those we love – will one day die. Though this awareness is uncomfortable, research suggests that the human capacity to contemplate death is a byproduct of consciousness itself. In fact, our efforts to cope with mortality are at the core of culture, religion, the desire for wealth, and even many of today’s societal crises. How might a deeper understanding of our implicit reactions to mortality help us turn towards responses that are more supportive of our species and planet? In this episode, Nate is...
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The Three Most Important Words We’re Taught Not to Say
The Great Simplification with Nate Hagens
In this week’s Frankly, Nate considers the ways in which our social species overvalues false-confidence rather than the more honest and inquisitive response of “I don’t know.” He invites us to consider the science behind this cultural bias towards certainty: from our biological response from the stress of “not knowing” to the reinforcing effects of motivated reasoning that ensnares even the smartest among us (especially the smartest among us). Overconfidence and the desire for quick answers have been the root cause of many of humanity’s disasters, from the space shuttle...
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Challenging Monopoly Power: Why Local Business is Better for People, the Planet, and Your Wallet with Stacy Mitchell
The Great Simplification with Nate Hagens
Monopolistic business practices have been illegal in the United States for more than a century. Yet, monopoly power continues to accelerate in our modern commercial landscape. Large, powerful corporations edge out smaller businesses, often citing scale, “efficiency”, and lower costs as their reasons for success. But looking more closely reveals a reality that is far different. Small businesses are more cost-effective and deliver better results to the people they serve than giant corporations. Furthermore, they form the backbone of engaged and connected communities. So what is actually...
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What Sloths Teach Us About the Superorganism
The Great Simplification with Nate Hagens
In this week’s Frankly, Nate reflects on the multiple metaphors brought to mind via a single photograph, which depicts a sloth climbing a barbed wire fence in Costa Rica. Beyond evoking compassion for a species that’s on the receiving end of human intervention into its ecosystem, the image raises larger ideas about the response of animals, including humans, to artificial cues and novel environments. Just as the sloth mistakes a fence post for the safety of a tree, modern humans mistake consumption, speed, and certainty for meaning. Moving beyond just the image, Nate unpacks the word...
info_outlineTwenty-five years ago, a landmark paper warned that the world’s coral reefs could vanish by 2050. Now, halfway to that projected date (and amid ever more frequent coral bleaching events), that grim prediction feels increasingly close to reality. What is the current state of Earth’s coral reefs, and what would happen to our planetary home without them?
In this episode, Nate is joined by Ove Hoegh-Guldberg, the marine biologist who made this landmark prediction, for an update on the health of coral reefs and the primary ecological stressors driving their decline. Drawing on decades of research, he explains the mechanisms of coral bleaching, the critical biodiversity hotspots that reefs create, and the implications for human populations that depend on these ecosystems. Ove also touches on the emotional impact of witnessing the loss of reefs for the scientists who have dedicated their lives to studying them.
How are human actions increasingly putting pressure on the very ecosystems that support more than one billion people? What would happen to the broader health of the oceans if reefs were to disappear entirely? And most of all, what changes can both individuals and institutions make today to support the health of these vital ecosystems – and in-turn, the well-being of the entire Earth?
(Conversation recorded on August 6th, 2025)
About Ove Hoegh-Guldberg:
Ove Hoegh-Guldberg is Professor of Marine Studies at the University of Queensland in Brisbane, Australia, as well as the Deputy Director of the Centre for Excellence in Coral Reef Studies. Over the past 10 years, he was also the Founding Director of the Global Change Institute. In addition to this work, Ove conceived and led the scientific XL-Catlin Seaview Survey which has surveyed over 1000 km of coral reefs across 25 countries and captured and analysed over 1 million survey images of coral reefs.
Ove’s research focuses on the impacts of global change on marine ecosystems, and he is one of the most cited authors on climate change. He has also been a dedicated communicator of the threat posed by ocean warming and acidification to marine ecosystems, being one of the first scientists to identify the serious threat posed by climate change for coral reefs in a landmark paper published in 1999, which predicted the loss of coral reefs by 2050.
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