"According to Star Trek: Star Charts, Klingons discovered warp drive in 930 A.D. However, according to canonical accounts in DS9: "Little Green Men", they became warp-capable some time after 1947." What canonical accounts are these? All we can tell from "Little Green Men" is that the Klingons developed warp drive before the Ferengi. – The preceding unsigned comment was added by Trek history (talk • contribs).