Following months of consultations with energy experts, Mexico is preparing to tap its shale oil and gas reserves using one of the world's most controversial extraction techniques: fracking. The process is already used to extract oil in the southeastern state of Veracruz, where local communities have long complained of pollution and environmental damage. But the administration of President Claudia Sheinbaum is seeking to reduce Mexico's reliance on the United States and – eventually – achieve energy self-sufficiency. FRANCE 24's Quentin Duval and Laurence Cuvillier report.