Adventure Ausrama Blog

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Eye Size is not accidental. It is determined by evolutionary factors. This is not so obvious today because in the twentieth century people moved to new countries in regions quite different from their place of origin. Eye sockets were measured from 55 skulls of native people throughout the world. The skulls were in museum collections from the 1800s. Large eyes were synonymous with large craniums. The native population of Micronesia had the smallest eyes. Scandinavians had the largest. This is contrary to the belief that Africans have the largest eyes. Eyes size is affected by the length of day and sun brightness. Bigger craniums were due to more brain allocation to sight. It did not make people smarter. This finding must mean that being able to get about in low light was important for survival. Features important for survival until the age of reproduction are carried on to later generations. Some things, however, can remain in a population if they affect life after puberty, ...

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Kidney transplants could soon be a thing of the past. It will soon be possible to take kidney cells from a patient, reprogram them, then put the rejuvenated cells back in. Sharon Ricardo of Monash University has taken cells from a person's kidney and made them into progenitors that will develop into healthy kidney cells. In China kidney cells have been isolated in urine. These cells are perfectly okay for reprogramming. The process is called induced pluripotency. Transplanting the new healthy cells will also enable further study into the causes of kidney disease. Kidney transplantation is a drain on health resources worldwide. This new treatment will save millions of dollars. Success in treating kidney disease will lead to similar applications for other diseases. This could impact on health treatment in the future, revolutionizing health care. http://www.adventure--australia.blogspot.com/ http://www.tysaustralia.blogspot.com/ http://www.feeds.feedburner.com/AdventureAustral...

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Australia has determined how fast the Universe is expanding. A student planning to study a PhD, Florian Beutler, has measured the Hubble constant. This is a special number that enables measurement of the age and size of the Universe. The Universe continues to expand with galaxies moving apart. Direction and speed that galaxies move are easy to measure, but distance of separation is more difficult. In the past, brightness of galaxies has been used to define this distance. Florian Beutler used data from a survey carried out with the UK's Schmidt Telescope to make calculations using a new method. Galaxies are in clusters throughout the Universe. The 6dF survey provided information about these clusters which enabled distant to be defined with an error of less than 5 per cent. The speed of expansion is very close to the figure determined by other methods. The Hubble constant is 67.0 +/- 3.2 km s-1 Mpc-1. http://www.adventure--australia.blogspot.com/ http://www.tysaustralia.blogspo...

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