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When Did America Get Wheat

Wheat originated in the Tigris and Euphrates river valley near what is now known as Iraq. It was first planted in the United States in 1777 as a hobby crop. The crop is now grown in 42 states in the United States and is the primary grain used in U.S.… 

When Did Cave Lions Die Out

Cave lions, or panthera spelaea, once lived across much of Eurasia before going extinct around 10,000 years ago. These Ice Age big cats, though closely related, were larger than their African lion relatives that still exist today. The results may provide new insights into why cave lions died out. When…