Humans
How Japan got a fix on brain-teasing highs
Sudoku was the biggest puzzle craze to hit the West from Japan, but as The Puzzle Ninja shows, there are plenty more, including Kakuro, KenKen and O'Ekaki
Culture
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Sudoku was the biggest puzzle craze to hit the West from Japan, but as The Puzzle Ninja shows, there are plenty more, including Kakuro, KenKen and O'Ekaki
Bullying and other social stresses may make it easier for inflammatory substances to enter your brain, altering your mood and leaving you susceptible to depression