publication date: Sunday, February 8, 2015 (part of Winter 2015)

category: Inventions

clue: This African would like people to keep talking about how he stored up his creative ideas for so long before using them.

explanation: Morrocan-born Yazami was an expert on batteries who invented part of the lithium ion batteries used in mobile phones around the world. more…

difficulty: hard

solved by: Russ Wilhelm and Steve West


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