In 2006, mining corporation Barrick Gold proposed the unthinkable: removing and relocating three glaciers in Chile's Andes to make room for an open-pit gold mine called Pascua Lama. When state authorities were asked about the environmental impact, they offered a startling admission—they "really knew nothing" about glaciers, that it was entirely new territory for them. This moment crystallized a phenomenon called "undone science," and it would reshape how Chile approaches water security for decades to come.
Undone science refers to research that remains unfunded, incomplete, or ignored because of political, economic, or industry pressure. Sometimes it's intentional; sometimes it's simply that powerful funders shape which questions get asked. In Chile's case, glaciers had existed in a regulatory blind spot despite being fundamental to the country's water security. They were largely absent from environmental impact assessments and regulations, allowing mining projects to sidestep scrutiny of their glacier-related impacts.
According to a study published in Tapuya: Latin American Science, Technology and Society by Javiera Barandiarán of UC Santa Barbara and colleagues, this gap in knowledge and regulation was no accident. The researchers identified three key drivers: a lack of pluralism that excluded certain ways of knowing, a loss of scientific autonomy when powerful funders shaped research agendas, and contested validation procedures over what counts as authoritative knowledge. These forces combined to keep glaciers invisible in policy conversations.
The Pascua Lama case became a turning point. Public outrage erupted over the plan to move glaciers for mining profit. The controversy mounted until the mine was ultimately closed in 2020. But in those intervening years, something crucial shifted. The state began reckoning with its blindness. In 2008, Chile created a dedicated glaciology and snow unit within its General Directorate of Water. By 2014, the country completed its first National Glacier Inventory. And in response to Pascua Lama, the first attempts to enact a glacier protection law were born.
Yet the story doesn't end there with simple resolution. A second case—the expansion of Los Bronces copper mine just north of Santiago, approved in 2023—reveals that undone science had evolved into a different form. This time, there was no absence of data. Instead, the battleground shifted to who controls which science counts as valid. The central controversy: mining dust particles settling on glaciers, darkening their surfaces and accelerating melt rates. Chile's Environmental Impact Service rejected Anglo American's environmental permit for the project, arguing the company had failed to adequately account for these impacts.
As Ajit Subramaniam, a research professor at Columbia's Lamont-Doherty Earth Observatory, noted in discussing these conflicts: "Often it is not a matter of uncertainty in the science that is confounding to policymakers so much as the difficulty in balancing opposing needs and who has a voice in that decision."
What emerges is not simply a story of science filling a gap, but of competing interests fighting to shape whose knowledge matters. Chile's journey from glacier ignorance to glacier regulation illustrates how environmental protection becomes possible only when the right questions are asked—and when communities have the power to demand answers.