Rio de Janeiro AP —

The crash of a small plane in southwestern Brazil killed four people including Chinese landscape architect and urban planner Kongjian Yu , Brazilian authorities said Wednesday.

The accident happened late Tuesday during a landing attempt at a large farm about 100 kilometers (60 miles) from the municipality of Aquidauana in Mato Grosso do Sul state, firefighters said.

Yu, who was known for promoting ecologically sound development, was traveling with two Brazilian documentary makers, Luiz Fernando Feres da Cunha Ferraz and Rubens Crispim Jr., who were making a film about the Pantanal wetlands. All three were killed along with pilot Marcelo Pereira de Barros, authorities said.

Video Ad Feedback In an interview with CNN earlier this year, Yu explained his "sponge

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