What Really Happens to Waste in Landfills Over Time?

What really happens to your trash after you throw it away? It might feel like it disappears—but in reality, it begins a slow, hidden transformation deep inside landfills. From trapped gases and underground liquids to materials that barely break down at all, the story of waste is far more complex than most people realize. In this video, we explore what actually happens to garbage over time—how it decomposes, what changes inside a landfill, and why some items can last for centuries. Once you see what’s going on beneath the surface, you’ll never look at “throwing something away” the same way again. ⏱️ Timestamps: 0:03 Intro 1:14 What Happens When Trash First Arrives 2:13 The Disappearance of Oxygen 3:08 The Start of Anaerobic Breakdown 4:09 The Role of Water and Leachate 5:09 Methane Gas and Energy Production 6:03 Why Plastics Don’t Really Decompose 6:55 Chemical Changes Underground 7:46 Final Thoughts If you enjoyed this video, don’t forget to like, subscribe, and let me know what topic you want to see next! #Landfills #Trash #Waste #Recycling #Environment #HowThingsWork #ScienceExplained #HiddenWorld #EverydayScience #WasteManagement #CuriousMinds #DidYouKnow #HistoryOfSimpleThings Video edited by: Daniela C.