Scientific American
reliable Ruled 2026-10-23.
Wikipedia perennial sources: generally reliable ("Scientific American", last discussed 2020). https://en.wikipedia.org/wiki/WP:RSP#Scientific_American
reliable Ruled 2026-10-23.
Wikipedia perennial sources: generally reliable ("Scientific American", last discussed 2020). https://en.wikipedia.org/wiki/WP:RSP#Scientific_American