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Off the Grid: Sally breaks down USA TODAY's daily crossword puzzle, Calm Down
USA TODAY via Yahoo Canada News· 5 days agoTAU (40D: Greek T) TAU is the 19th letter of the 24-letter Greek alphabet. TAU follows sigma and...
TAU (40D: Greek T) TAU is the 19th letter of the 24-letter Greek alphabet. TAU follows sigma and...