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To explain why he's founded over 100 hands-on labs in sub-Sahara Africa, Mark Gelfand points to Hebrew school classes and a natural curiosity for the workings of the world

United statesSouth euclidSouth sudanMark gelfandJulius caesarMichael ohaganAddis ababaMark gelfondDaily editionbyAbayudaya jewishMichaelo haganGetty imagesSaharan africa