Human footprints found in White Sands National Park, New Mexico, were associated with astonishingly ancient age dates in 2021. New research published in the October 5, 2023 issue of Science reports on two independent age dating techniques that corroborate the third technique. The data show that the footprints are between 23,000 and 21,000 years old. This will require fundamental changes in rewriting our history.
Geoglyphs are large designs typically longer than about 13 feet (4 m) and produced on the ground by arranging rocks or soil. They are distinctive elements of the archaeological record along the Pacific coast of the Americas, from California to Chile. The Nazca lines of Peru are famous geoglyphs of animals and geometric shapes, constructed in the arid deserts of south-central coastal Peru between about 500 BCE and 500 CE.
What would Italian food be without tomatoes or Indian food without chiles? Both plants were first cultivated and used for thousands of years in the Americas before being transported across the world to join the cultures where they are appreciated today. Plant and animal exchanges have shaped our societies and our environments -- especially the two major migrations and exchanges that have taken place in just the past few millions of years.
When mammoths, mastodons, ground sloths, horses and other Pleistocene megafauna became extinct in the Americas some 12,000 or so years ago, what happened to the plants those animals were eating? It’s an interesting story, especially [...]