Oil Spill in Gulf Sparks Environmental Concerns
Government claims spill from natural seeps and a March ship in Veracruz.
Activists say satellite images show February Pemex pipeline leak.
Spill spread 373 miles into seven reserves, releasing 800 tons.
Copernicus images show the Grande, a repair boat.
President Sheinbaum denies leak in state infrastructure.
Pemex rejects images as 'inaccurate,' citing routine inspections.
1 week ago