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Oct. 8, 2012 — A new study from a team of researchers at the Perelman School of Medicine at the University of Pennsylvania, the Monell Chemical Senses Center, and the Philadelphia VA Medical Center, reveals that a person's ability to taste certain bitter flavors is directly related to their ability to fight off upper respiratory tract infections, specifically chronic sinus infections. The new research is published in the latest edition of the Journal of Clinical Investigation. Most humans experience five types of tastes: sweet, salty, sour, bitter, and savory. The sense of taste is mediated by taste receptor cells which are bundled in our taste buds. "Sour" and "bitter" taste sensations alert the body to harmful foods that have spoiled or are toxic. Bitter taste receptors regulate upper respiratory defense system
A rough estimate based on geologic records indicates there's a 1-in-10,000 chance of a "supereruption" at Yellowstone during our lifetimes. However, given the erratic nature of volcanoes, that number doesn't mean much. The bulging pocket of magma swishing around beneath Old Faithful might never blow its lid again. Or, it might put on a surprise fireworks show next Independence Day. Scientists just don't know. But if or when it blows, what will actually happen? What if Yellowstone's supervolcano erupts?
The end of the world as we know it could come in any number of ways, depending on who you ask. Some people believe global cataclysm will occur when Earth's magnetic poles reverse. When north goes south, they say, the continents will lurch in one direction or the other, triggering massive earthquakes, rapid climate change and species extinctions. The geologic record shows that hundreds of pole reversals have occurred throughout Earth's history; they happen when patches of iron atoms in Earth's liquid outer core become reverse-aligned, like tiny magnets oriented in the opposite direction from those around them. When the reversed patches grow to the point that they dominate the rest of the core, Earth's overall magnetic field flips. What If Earth's Magnetic Poles Flip? | Scientists Discuss the Effects of a Geomagnetic Field Reversal
100 Amazing Things You Never Knew About Your Body - Online Nursing Programs, Schools & Degrees You think you’re learning everything you can in your biology and anthropology classes, but textbook editors simply don’t have all the space they need to give you the full story of your body. Some of the facts below are trivial, some are ancient history, and some of them may very well save your life one day.
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Barnacles may look nice and nautical on things like rocks, but they’re a major problem for watercraft of all sorts. On the hulls of ships, for example, they can drastically decrease the vessel’s hydrodynamics, causing it to burn more fuel and emit more emissions in order to maintain its cruising speed. The most common way of keeping barnacles off those hulls involves the use of environmentally-unfriendly paints. Now, however, a scientist from Sweden’s University of Gothenburg has developed what could be a less harmful alternative. On the Water - Page 4
A new study finds that a drop in testosterone levels over time is more likely to result from a man's behavioral and health changes than by aging. The study results will be presented Monday at The Endocrine Society's 94th Annual Meeting in Houston. "Declining testosterone levels are not an inevitable part of the aging process, as many people think," said study co-author Gary Wittert, MD, professor of medicine at the University of Adelaide in Adelaide, Australia. "Testosterone changes are largely explained by smoking behavior and changes in health status, particularly obesity and depression." Declining testosterone levels in men not part of normal aging, study finds
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LHC Physicists Explain the Higgs Boson Particle The Large Hadron Collider is pretty interesting. New subatomic particles are being discovered with its utilization. Just last Friday a new particle was discovered – “neutral Xi_b^star baryon”.
A man sits down before a gun, which is pointed at his head.
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News April 2012 : Nature