A closer look
Picture giant mirrors in space bouncing sunlight away from Earth, or fleets of planes puffing harmless particles into the sky to cool the planet as if Earth were a giant overheating computer. No, this isn’t the plot of a big-budget sci-fi movie—these are actual experiments on the drawing boards of real governments desperate to slow climate change. The ideas sound thrilling, terrifying, and slightly cartoonish, like a supervillain’s master plan. Yet here we are, debating whether humanity should play planetary handyman, risking unknown twists in the global story just to keep the stage from burning down.
