How much sunlight Earth reflects naturally varies a lot. The bigger the range of natural variability, the greater the odds that any evidence of a manmade effort to brighten up the planet would be lost in the “background noise.”
subtropical deserts
How much sunlight Earth reflects naturally varies a lot. The bigger the range of natural variability, the greater the odds that any evidence of a manmade effort to brighten up the planet would be lost in the “background noise.”