Casa Grande Ruins National Monument located in Arizona preserves Hohokam Culture and ruins of the largest prehistoric st ...

Indigenous North Americans spread peaches after explorers introduced them. They developed unique varieties and cultivated ...

The strength of the sun's ultraviolet (UV) radiation is expressed as a Solar UV Index or Sun Index.The UV Index does not exceed 8 in the UK (8 is rare; 7 may occur on exceptional days, mostly in the ...

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