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Obituaries and tributes

Luis Yanza sought accountability for damage caused by oil in the Amazon

For much of the late 20th century, oil development in the Ecuadorian Amazon proceeded with little restraint. Wastewater and drilling residues were discharged into rivers or left in open pits. Forest was cleared. Communities downstream relied on contaminated water for daily use. Over time, residents reported rising rates of illness, including cancers and respiratory disease. The contamination itself was not in doubt; who should answer for it was. By the early 1990s, the region had become a test of whether affected communities could use the law to hold a multinational company to account.

That effort became a long legal case against Texaco, later acquired by Chevron. It moved from New York to Ecuador and drew in tens of thousands of plaintiffs from Indigenous and settler communities. The case lasted decades and depended on sustained organizing across a remote and fragmented region.

Luis Yanza was central to that work. He died on March 27th 2026, from cancer. While lawyers argued motions and judges weighed jurisdiction, he traveled through the northern Amazon, meeting communities and maintaining a coalition that spanned more than 80 villages and several Indigenous groups.

He was educated in Lago Agrio, a town shaped by oil development, and excelled at school but lacked the means to continue. A brief attempt to study in Quito ended quickly. An industrial accident cost him part of a finger. Those who worked with him later described a self-directed intelligence and an ability to move between Indigenous communities, farmer settlements, and legal teams from abroad.

As president of the Frente de Defensa de la Amazonia, he linked plaintiffs to the broader campaign. Working with Pablo Fajardo, he helped assemble claims on environmental damage and public health. In 2012 an Ecuadorian appeals court upheld a judgment ordering Chevron to pay billions of dollars. The company refused, and enforcement remains unresolved.

The case did not end cleanly. It established a record of contamination and a long dispute over responsibility. Yanza spent his life sustaining that campaign. It continues.

By Rhett Ayers Butler

Rhett Ayers Butler is the Founder and CEO of Mongabay, a non-profit conservation and environmental science platform that delivers news and inspiration from Nature's frontline via a global network of local reporters. He started Mongabay in 1999 with the mission of raising interest in and appreciation of wild lands and wildlife.