Adventure Ausrama Blog

Between 7 million and 2 million years ago dozens of whales came to an untimely end all in one place. They appear to have died in small groups. The reason why is not clear. Maybe storms drove them there, they were trapped in a landslide or caught in a lagoon. Over time, the shallow area has been pushed up by geological change. Now they are located in the driest place on Earth still within a kilometer of the surf. But this is the Atacama Desert. Chilean scientists are asking why whales die in large groups in far flung places such as Chile, Peru and Egypt. Seventy five skeletons have been found in Chile so far, 20 of them complete examples. Old and young whales lay alongside each other in an area of 5,000 square meters. They are mostly baleen whales. A rare, extinct walrus-like dolphin has also been found there. Most scenarios of the wales' death involve single incidents, a storm or landslide trapping them in a lagoon. However, it is more likely that a "natural"...

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The mystery of how the Gamburtsev Subglacial Mountains in the Antarctic was formed has been solved. The range is at a high elevation and was only discovered in 1958. It is buried under 3,000 meters of ice. A group of scientists used aircraft with magnetometers, gravity meters and ice penetrating radar. They found that the mountains had been there for a billion years. The range spreads out in a 1,800 long earth fracture reaching from the eastern Antarctic to India. This region of the Earth has been relatively free of tectonic activity. A billion years is short in tectonic terms, so the mountains have sharp edges not greatly worn away by water, wind and snow. The rift system also contains the largest subglacial lakes on the Antarctic continent. Before animals roamed the Earth micro-continents collided to form the thick crustal root on which the mountain range stands. As the mountains eroded the root was preserved, frozen by the bitter cold. When dinosaurs existed 250,000 years ag...

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Your job can kill you or make you ill. If you work where chemicals are going into the air during the day you can get serious chronic disease. Twin "partners" were employed where they were exposed to trichloroethylene (TCE) and perchloroethylene (PERC). Many developed Parkinson's disease, where the brain stops producing dopamine leaving the sufferer with impaired balance, slowed movement and stiffness. Though inherited genes can be a factor, environmental factors cause those without the genes to get the disease. Ninety nine pairs of twins were evaluated. Hobbies and work environments, smoking and head injuries were studied. Of the six suspect chemicals TCE, PERC, carbon tetrachloride, n-hexane, xylene and toluene, TCE and PERC were identified as the main contenders for causing Parkinson's. Those who worked in machinery, dry cleaning and industrial areas where TCE and PERC are commonly used were in most danger. The two chemicals are shown to cause neurodege...

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Climate models are presumed to be far too complicated for the layman to understand so they are left to the experts. However, the models save lives and valuable infrastructure. The complicated lines of code make predictions about future weather patterns. Just a few decades ago weather could not be forecast for two days ahead. Currently, five day forecasts are common and they are reliable. Even seasonal outlooks are treated as valid. For examples, we have been told in Queensland that there will be a wet summer. The all-seeing weather bureau is counted on to provide information about strong winds, hailstorms, cyclones and even the direction of forest fires. To get an accurate prediction, up to date and correct data must be fed into the models. Computers are getting larger all the time and more complex models are being formulated. This is a complex job. Scientists need to draw on many specialized fields in physics, mathematics and computer science. No university offers a course te...