Indigenous communities have lived with changes to the climate for centuries. Their adaptations over those many years are based on their close observation of weather, water, soils and seasonal change, and they have been refined through generations of learning.

That knowledge, though developed deep in the past, is increasingly useful in the modern world. As global temperatures rise, climate pressures are intensifying, with longer dry spells, stronger storms and more erratic rainfall. Terrace systems reflect Indigenous peoples’ long experience of living with environmental uncertainty in specific places and historical contexts. They offer ways of thinking about risk and long-term land use based on observation and intergenerational learning.

My research focuses on one particular strategy for adapting to a changing climate: terrace agriculture. It’s found in mountainous regions worldwide, where people have reshaped steep slopes into level steps that slow runoff and allow water to infiltrate the soil.

By slowing water without blocking its flow, terraces reduce erosion, keeping soil where crops can grow and preserving the moisture they need. They require constant maintenance, which leaves traces in the landscape, such as accumulated repair layers and sediment deposits associated with crops. I study those traces to learn how communities responded to environmental stress over time. The walls and soils are not only fertile agricultural land but also archives of adaptation, documenting past decisions about water, labor and crops.

I have worked as an anthropological archaeologist in the Ifugao rice terraces of the northern Philippines for nearly two decades. These landscapes are often described as ancient and unchanging, but archaeological and historical research shows that most were constructed........

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