The article discusses how Municipal Solid Waste (MSW) is managed in Argentina, specifically in Salta. Researchers studied the waste composition and found that a large portion is biodegradable organic material. They analyzed the organic waste to see how it behaves during anaerobic digestion, a process that breaks down waste without oxygen. The study showed that the waste had the right balance of carbon, nitrogen, and phosphorus for optimal digestion. Testing in a small-scale reactor indicated that the anaerobic process was stable and showed promise for larger-scale applications.