Summary: Topics covered on today's episode of Mind Set Daily "Mysterious 'Man-Eating' Holes Appear in Sand Dune" Last summer, 6-year-old Nathan Woessner was walking across the sands of Mount Baldy in the Indiana Dunes National Lakeshore when he suddenly disappeared into a deep hole. It took a team of rescuers about three hours to pull Woessner to safety from beneath 11 feet of sand and sediment. More holes have appeared in Mount Baldy, forcing officials with the National Park Service (NPS) to close part of the park, located 55 miles southeast of Chicago on the shores of Lake Michigan. But why are these dangerous holes suddenly appearing in the sand dunes? This particular dune has a lot of history. The site was once mined for sand used in the manufacture of glass Mason jars. There are also manmade structures like an old wooden staircase buried beneath the surface of the dune. Historical photographs of the area determine what has changed since the 1930s. Trees and grass that once covered Mount Baldy are now also buried. Researchers say that the age of the materials and the wet conditions during the spring of 2013 may have forced these materials to become unstable, collapsing and creating openings to the surface. "Researchers Track Isolated Amazon Tribe With Google Earth" As you can imagine, it isn't easy to study uncontacted tribes in Amazonia. And the history of western interaction with these tribes is dark indeed, often leading to the destruction of these peoples' way of life. So researchers have come up with a less invasive way of keeping tabs on them: tracking them via Google Earth. In a study published in the American Journal of Human Biology, researchers analyzed satellite images of one particular Amazon village on the border of Brazil and Peru, and calculated that it has fewer than 40 inhabitants. Deforestation, cattle ranching, illegal mining, and outside colonization threaten their existence. There are somewhere between 70 and 100 uncontacted groups in Amazonia. Visit the article links and listen to this episode to find out more! Support Mind Set Central Subscribe or donate
