Father-and-son-team Orazio and Salvatore Consoli help gather the seismic data -- three generations of their family have worked on the volcano.

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Orazio Romeo, an Italian microbiologist, connected with Emanuel Nnadi, a researcher in Nigeria, who sent yeast samples for Romeo to study.

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Conversely, works like Orazio Mochi's finely modeled statuette of a "Black Court Jester" (c. 1600-10) and a Flemish or French statuette of a "Black Woman at her Bath" (1580s) reveal the aesthetic delight European sculptors took in the use of bronze with various patinations as a natural medium to represent the variety of African skin tones.

WSJ: Less Familiar Faces | Revealing the African Presence in Renaissance Europe | Princeton University Art Museum | By Barrymore Laurence Scherer