Science Facts by ScienceIQ.com

Time 2021-06-22 13:33:30

Web Name: Science Facts by ScienceIQ.com

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Turning Oil Into Gas When you see all those cars at the gas station filling up with unleaded, you may not stop to think about how that gasoline got there. It wasn't pumped out of the ground in that form. The same goes for jet airplane fuel. It didn't start out that way--it took a long refining process to become fuel. You could never fly an airplane with gasoline, but ... Continue reading... Barn Yard Aeronauts The word aeronaut is derived from the Greek terms 'aero' meaning air or atmosphere and 'nautes' meaning sailor. Originally, individuals who piloted balloons or airships (blimps or dirigibles) were ... Continue reading Heading For The Badlands The bizarre landforms called badlands are, despite the uninviting name, a masterpiece of water and wind sculpture. They are near deserts of a special kind, where rain is infrequent, the bare rocks are ... Continue reading What is Geodesy? Geodesy is the science of measuring and monitoring the size and shape of the Earth. Geodesists basically assign addresses to points all over the Earth. If you were to stick pins in a model of the ... Continue reading What Is An Atom? Atoms are the extremely small particles of which we, and everything around us, are made. A single element, such as oxygen, is made up of similar atoms. Different elements, such as oxygen, carbon, and ... Continue reading Neurogenesis by David Gamon, PhD Until recently, any doctor would have told you that when you lose brain cells, you can never replace them. Scientists now know that the human brain has the ability to regenerate brain cells, or neurons, a process known as neurogenesis, in at least the hippocampus (used for memory) and olfactory bulb (used for smell). If your hippocampus isn't working right, you can't learn anything new or access recent memories. Damage to your hippocampus can make it impossible to create new memories (a condition called anterograde amnesia - Leonard Shelby's condition in the movie Memento) or remember what happened in the days or months before the accident. The hippocampus is also one of the first brain structures to be damaged by Alzheimer's Disease. That's why Alzheimer's first shows up as difficulty with recent memories, while memories of long-ago events remain intact until the disease is more advanced. When your olfactory bulb stops replacing its cells, it's often a sign that there's something wrong with other parts of your brain, too. Loss of smell in old age can be a sign of Alzheimer's, perhaps because when the brain stops replacing olfactory cells it stops replacing cells in the hippocampus-based memory system as well. That's why one of the latest diagnostic tools for Alzheimer's is a scratch-and-sniff test.

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