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A labyrinth of submerged caves in Mexico called Sac Actun is now the largest known underwater cave system in the world. 216 miles of caverns hold countless artifacts from the ancient Mayan civilization 10 to 12,000 years ago. Archaeologists have discovered Mayan ceramics, extinct animals, early humans, and Mayan graves, and the exploration’s just begun!
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Ancient dog bones from an archaeological dig in Germany provided new clues about how dogs evolved from wolves. The 5000 to 7000 year-old bones held DNA that suggested dogs were domesticated 30,000 years ago and then migrated around the world. Dogs from India, Ireland and Germany all have common ancestors. Your dog’s great-great times 4000 grandpa was a wolf!
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