How Pollution Disrupts Earth's Natural Balance

CrashCourse

This episode of Crash Course Ecology dives deep into the complex nature of pollution, challenging the common misconception that it is simply trash or synthetic chemicals. Hank Green explains that pollution is fundamentally about substances—whether natural or synthetic—existing in the wrong place or at the wrong concentrations. The video explores how human activities disrupt Earth's natural biogeochemical cycles, specifically looking at how overloading the carbon, nitrogen, and phosphorus cycles leads to climate change and massive aquatic dead zones.