Having a Spanish (non-English-speaking) wife I am always on the lookout for natural history series with commentary available in Spanish, which after all is the third most-used language in the world. I have La Vida Privada de las Plantas, but that is all. Even fims offer translations in minority languages but rarely in Spanish. Publishers are missing out on a potentially huge market. Would be interested in liaising with others who have to tacke the same problem.