Puzzle: In Boxes

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The atomic symbols on the puzzle page are all you need to fill in the highlighted squares. Some appear in the grid more than once. The 12 highlighted answers relate to articles that appeared in Scientific American in 2007—one for each month.

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Scientific American Magazine Vol 297 Issue 6This article was published with the title “Puzzle: In Boxes” in Scientific American Magazine Vol. 297 No. 6 ()
doi:10.1038/scientificamerican122007-1sSUX3Wkf5OsceahN6DcVd

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