solar geoengineering

In 1991, Mt. Pinatubo erupted in the Philippines. The eruption spewed 20 million tonnes of sulfur dioxide into the stratosphere, a layer in the Earth’s atmosphere between 10 and 50 kilometers above the ground. The haze of sulfate particles was ushered around the world by global weather patterns, and before long, the whole world was shrouded in a thin layer […]