There's an old science fiction story, where the aliens invade, not with flying saucers and ray guns, or hypervelocity near-C projectiles but by spreading what i

There's an old science fiction story, where the aliens invade, not with flying saucers and ray guns, or hypervelocity near-C projectiles but by spreading what is essentially a pesticide globally that is tailored to affect human behavior and so nobody realizes what is really happening. There's no spaceship hanging around to hack into like in Independence day, there isn't even anyone willing to consider the idea that what is happening might be extrinsic. https://en.wikipedia.org/wiki/The_Screwfly_Solution https://en.wikipedia.org/wiki/The_Screwfly_Solution Same author wrote a short story about a scientist who developed a tailored virus to save the earth from ecological destruction: https://www.lightspeedmagazine.com/fiction/last-flight-doctor-ain/ https://www.lightspeedmagazine.com/fiction/last-flight-docto... "The tape recorder they put by his bed functioned right on through, but if anybody had been around to replay it they would have found little but babbling. “Gaea Gloriatrix,” he crooned, “Gaea girl, queen . . .” At times, he was grandiose and tormented. “Our life, your death!” he yelled. “Our death would have been your death, too, no need for that, no need.” At other times, he was accusing. “What did you do about the dinosaurs?” he demanded. “Did they annoy you? How did you fix them? Cold. Queen, you’re too cold! You came close to it this time, my girl,” he raved. And then he wept and caressed the bedclothes and was maudlin."