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Carbon sequestration is one of the major challenges of the 21st century in the context of climate change. Around the world, researchers are studying new methods to store it underground. Xavier Dupla is one of them. He is a soil specialist and a PhD student at the University of Lausanne in Switzerland. He is currently testing the addition of rock dust (basalt) on the land of an organic vineyard in Switzerland, in Pierre Lambert’s Domaine des Coccinelles.