@Poseidon11dThe Aztecs: Part 1This video lecture by Dr. Roy Casagranda explores the culture and history of the Aztecs, focusing on life in the Valley of Mexico and the rise of the Aztec Empire up until 1519 AD.
@Poseidon11dAmerica's Forgotten Natural Wonder: The Great RaftThis video explores the Great Raft, a massive logjam that filled the Red River for over 1,000 years. It discusses the raft's impact on local cultures, unique ecology, and the engineering challenges it posed. The video also covers the consequences of its destruction and its lasting effects on the landscape.
@Poseidon11dThe Eye of Sahara The Eye of Sahara, also known as the Richat Structure, is a geological dome in Mauritania with concentric rings. Initially thought to be an impact crater, it is now understood to be an uplifted dome with varying erosion rates leading to circular ridges. Astronauts aboard the ISS captured detailed images of this structure, revealing different rock types and dune fields surrounding it.
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