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Hungry for Clues? The second set of Continent, Country, and City clues is here. Build upon last week's clues to narrow your search. More. . .

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Mystery Class Photoperiod Map
 
Reasons for Seasons: Model

Sweets
Wikimedia Commons/Silar

 

Mystery Class is a global game of hide-and-seek. Follow photoperiod clues to search for ten secret sites around the world. Track sunlight to solve a mystery—and discover the reasons for seasons along the way.

 

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