Exploring the dynamics of Earth with Dr. Steven Goodbred

Dr. Steven Goodbred is a professor at Vanderbilt University whose research focuses on how landscapes evolve over time, particularly in river deltas and coastal regions. His work spans two major geographic areas: the Ganges-Brahmaputra delta in South Asia and the mountainous desert coasts of northern Peru. In Bangladesh, his research explores how climate change, tectonics, and human activities influence the world’s largest delta system, home to one of the most densely populated nations on Earth. In Peru, he collaborates with archaeologists to investigate how environmental changes over thousands of years shaped early human societies.

The Vanguard: What got you interested in academia?

Dr. Goodbred: I’ve always loved learning, and academia allows me to be a lifelong student. It’s a career where you constantly gain new knowledge, but you also have more agency in how you direct your learning. Teaching has been just as valuable — revisiting topics I was once introduced to forces me to reflect on them in deeper ways.

One thing that has surprised me is how rapidly scientific knowledge and technology have evolved. I’ve been teaching about sediments for 20 years, and while the fundamental processes remain the same, the questions we ask and the careers tied to them have changed dramatically. A lot of this shift has been driven by economic and environmental changes. For example, when I first designed this course 20 years ago, it focused largely on the petroleum industry. Now, I integrate more environmental issues, because the challenges we face are more diverse than just resource extraction.

The Vanguard: Your work in Bangladesh touches on both geological and human challenges. How do you balance studying the natural evolution of the Ganges-Brahmaputra delta while also considering the impact of human activity, like groundwater extraction and infrastructure development?

Dr. Goodbred: One of the fascinating things about earth sciences is that it forces you to think across multiple time scales. Engineers often focus on the immediate — how to fix a problem today. That’s necessary, but geoscience provides context.

Humans naturally want to stabilize their environment, to keep things the way they are, which makes sense. But from a geological perspective, we have to think in terms of centuries, even millennia. Human civilization itself is about 6,000 years old. My colleague Joe Rife, who excavates ancient Roman sites in Greece, often reminds me that civilizations from 2,000 years ago were incredibly advanced. When you take an even broader view, looking at civilizations over thousands of years, it becomes clear that no society remains static.

This perspective can be both liberating and frustrating. It frees us from the idea that there’s a single, permanent solution. Society itself is always shifting — just like the Earth. What worked 20 years ago might not work today. That’s why I believe we should think of progress as a continuous journey, not a final destination.

As I’ve grown older, I’ve come to appreciate this long-term view even more. Teaching has become a way of reliving my own academic journey, and I see geology as a kind of coping mechanism—it helps me accept change, even in my own life. Just as landscapes evolve, so do we, and that’s okay.

The Vanguard: Sediment transport and deposition are at the core of your work, whether in deltas or coastal margins. What’s one surprising or counterintuitive finding from your research that changed the way you think about these processes?

Dr. Goodbred: I’ve always been fascinated by how landscapes take shape, how sediment moves and accumulates over time. But one of the biggest surprises came when I first traveled to Bangladesh during my PhD. It wasn’t just the physical landscape that was different — it was a completely distinct world, both culturally and environmentally. I realized that people’s lives and traditions had evolved alongside the landscape. The way they gather food, travel, and build communities is deeply tied to their surroundings.

Coming to Vanderbilt also changed my perspective. I was excited to return to geoscience, but I didn’t expect to collaborate so much with scholars from other fields — people like Jonathan Gilligan in environmental sociology. Through these collaborations, I started integrating human and policy perspectives into my work. For example, we’ve worked on projects funded by the Navy that require interdisciplinary approaches to environmental change.

One of the most interesting aspects of my research now is looking at how people in Bangladesh adapt to their ever-changing landscape. Deltas are incredibly dynamic, and human resilience in these environments is remarkable. The landscapes are constantly shifting, and so are the ways people navigate them.

The Vanguard: Given the scale of sea-level rise and climate change, how do you see the future of major deltas like the Ganges-Brahmaputra? Are there lessons from the past that might inform how we adapt to these changes today?

Dr. Goodbred: History shows that civilizations often collapse due to environmental stress. When one society conquers another, they usually want to preserve what they’ve taken. But environmental disasters — droughts, floods, or resource depletion — can lead to complete societal breakdowns.

That said, I’m not entirely pessimistic. Human nature hasn’t changed enough for me to believe we’ll avoid all the challenges ahead, but strain often leads to innovation. When systems are pushed to their limits, new solutions emerge. It’s important to frame climate change and environmental crises within the broader arc of life on Earth. There have been mass extinctions before, but life itself continues to evolve. If the dinosaurs hadn’t gone extinct, we wouldn’t be here. The real tragedy in environmental change isn’t the shifting economy or political systems—it’s human suffering. That’s what we need to focus on. As an educator, my goal is to give students a broader set of tools to understand these challenges. The more perspectives we integrate, the richer our solutions will be.

I’m also fascinated by how different people think — how our brains process problems in such complex and unique ways. If we were all the same, progress wouldn’t happen. That’s why interdisciplinary work is essential. We have to embrace different perspectives and celebrate our diversity in thinking.

The Vanguard: You teach courses that integrate geology, climate, and human systems. What’s a concept or case study that really sparks curiosity in your students and leads to deeper discussions in class?

Dr. Goodbred: I think students get really engaged when they see how science connects to human experiences. When I first went to Bangladesh, I was exposed to a completely new culture, and that changed how I viewed my own work. Later, collaborating with colleagues in other disciplines helped me see that geology doesn’t exist in isolation — it intersects with sociology, policy, and human decision-making.

Students are especially drawn to extreme climate events — hurricanes, tsunamis, and landslides. These phenomena are dramatic, but they also reveal important geological processes happening beneath the surface. Another key part of getting students invested is showing them how human elements tie into science. If you can connect the concepts to real people and communities, the learning experience becomes much more powerful.

References

Goodbred, S.L., and S.A. Kuehl. “The significance of large sediment supply, active tectonism, and eustasy on margin sequence development: Late quaternary stratigraphy and evolution of the ganges–brahmaputra delta.” Sedimentary Geology, vol. 133, no. 3–4, June 2000, pp. 227–248, https://doi.org/10.1016/s0037-0738(00)00041-5. 

Goodbred, Steven L., et al. “Transformation of maritime desert to an agricultural center: Holocene environmental change and landscape engineering in Chicama River Valley, Northern Peru Coast.” Quaternary Science Reviews, vol. 227, Jan. 2020, p. 106046, https://doi.org/10.1016/j.quascirev.2019.106046.