How did you get earlier access to Scientific American? That article is dated 4 days from now.
I think they're giving their online readers a sneak peek to their physical October issue. https://www.scientificamerican.com/article/its-time-to-engineer-the-sky/
he ignores the embargo like a boss https://www.scientificamerican.com/article/its-time-to-engineer-the-sky/ or he lurks on Reddit https://www.reddit.com/r/climatechange/comments/16mzrev/its_time_to_engineer_the_sky/