Washington Post: Scientists say the planet is hurtling toward a global-warming danger zone, and humans deserve much of the blame. But how exactly does burning coal or clearing forests lead to glaciers melting, seas rising and oceans overheating? Here's how experts describe the system.
It all starts with greenhouse gases
Greenhouse gases in the atmosphere insulate Earth like a cozy comforter. They allow the sun to warm the planet, then hold in some of the heat that would otherwise radiate back into space. Human...