Researcher: The US Owes the World $4 Trillion For Trashing the Climate

merbs writes: Climate change wasn't created equal. Rich, industrialized nations have contributed most of the pollution and gone way over their carbon budgets—while smaller, poorer, and more agrarian countries are little to blame. The subsequent warming will, naturally, impact everyone, often hitting the poorer countries harder. So should rich countries pay up? Researcher Damon Matthews has quantified how much historically polluting nations owe their global neighbors—and it's a lot.