James Burke (science historian) 

Hi. The problem at James Burke (science historian), is that the link you've added leads to White, which is about the colour white, not about the ethnicity.  If you had linked to white people, that would make more sense. Always remember to check your work ;) 

However, the "ethnicity" field in the infobox seems quite bizarre to me. As you said about "caucasian", it's an "outdated racial categorisation", and I havne't seen it used before in other articles. I'm going to remove it entirely from that article, until I get some feedback from the folks who know about these things at Template_talk:Infobox_Person#Ethnicity. 

Hope that helps. Thanks.