His children's magazine work has included Junior Scholastic, Highlights, and Odyssey. he has authored and illustrated the books Spinning Worlds, Volcanoes and Earthquakes, and Lightning and Rainbows. An astronomical artist for more than fifteen years, Mr. Carroll has done commissioned work for NASA, and his art has appeared in several hundred magazines throughout the world. His paintings have aired on "Nova," "Cosmos," and various TV specials. He was chief artist at the Reuben H. Fleet Space Theater and Science Center in San Diego and now lives with his wife, Caroline, and children, Andy and Allie, in Littleton, Colorado.