Archive for the ‘Science’ Category
Scientists say evidence is mounting “that creating healthy animals through cloning is More difficult than they had expected.” So began a front-page story in the New York Times (Marching 25), highlighting the frustrations of animal cloners, and the chance that person cloning whitethorn prove technically inconceivable. Those worried about the ethics of individual cloning have greeted this as good news, a sign that the slippery slope is leveling come out of the closet. Unfortunately, the new obstacles English hawthorn prove less than insurmountable in the hanker tally–and in bioengineering, the yearn running often proves surprisingly short. For those whose doubts about ergonomics ar expressed by the philosopher Leon Kass as “the wisdom of repugnance,” it is no meter to relax: The slope Crataegus laevigata soon steepen once Thomas More. In cloning, a cellular cell nucleus from the grownup to be cloned is injected into an testis from which the karyon has been removed.
Metal detectors – When people think of Metal Detectors, some people think of combing a beach in search of coins or buried treasure while other people think of security, or the handheld scanners at a concert or sporting event.
Metal detector technology is a huge part of our everyday lives, with a range of uses that span from recreational activities to work and to safety. The metal detectors in airports, office buildings and prisons for example help ensure that no one is bringing a weapon onto the property. Consumer oriented metal detectors provide entertainment to people and give chance in discovering hidden treasures.
There are many different kinds and styles of metal detectors – gold detectors, coin and jewel detectors, beach-hunting detectors, underwater metal detectors, handheld and walk through metal detectors. Buying a metal detector can be complicated. Before deciding on a metal detector, there are a few points you should carefully consider.
Geothermal energy is often viewed as a relatively new form of alternative energy. In truth, the use of geothermal energy stretches far back into the past.
Looking To The Past Of Geothermal Energy
Geothermal energy is literally, “earth heat”. This type of energy’s name comes from two Greek words: “geo” meaning earth, and “therme”, which means heat. While it may seem that the use of geothermal energy is a relatively new idea, it is actually an ancient practice. Many different cultures have used geothermal power to their advantage, dating back to some of the Earth’s earliest civilizations.
With the record-setting hurricane season of 2005, it is never too soon to begin preparing for the 2006 season, which has been predicted to have an above average number of hurricanes.
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As public health consultants, our first concern is for the health and safety of the people who suffer through these unfortunate events. The potential for disease outbreaks and serious injury loom far after the threat of a major hurricane. As such, people affected by major weather events of catastrophic size must first be prepared to deal with the following conditions so critical to human survival including food, water and shelter.
Evolution theory teaches that survival is for the fittest living organism.
What is life? What is fit? And what does it mean to survive?
Well, there are many definitions of course. A useful definition, in scientific perspective, is the one that allow us to analyze myriads things with fewest principles. So here they are.
A living organism is a class of objects that share 3 traits.
1. Reproduce. Living organism can make copies.2. Inherit. Living organism, in the process of reproducing, will inherit traits to the offspring.3. Mutate. Living organism, in the process of inheriting, will make small mistakes.
That seems like a reasonable definition. If we look most living things around us, like dogs, cats, pigs, birds, fido, virus, etc., they all share those traits.
However, based on those definitions, God is not alive, while computer virus, religious doctrines, ideologies, and ideas are alive.
I don’t think God will mind though. It’s just a definition.
The practical aspect is that we can use evolution theory to explain the sort of humans, cats, dogs, germs, doctrines, ideologies, and ideas that are common nowadays.
Different living organism performs those 3 traits differently. Those living organism that reproduces a lot becomes plenty. Those that reproduced a lot, become common.
That’s the basic of evolution theory.
For example, we see that peacocks tend to have long elaborated tails. From this, we can guess peacocks with long elaborate tail must have made more peachicks. Perhaps, peahen love peacocks with long elaborate tails. It’s true.
Suppose it were true. Then peacocks with longer tails will mate with more peahens. Those happy couples will then produce more peachicks.
Male peachicks will inherit long tails. Female peachicks will inherit preferences for long tail. So, peahens like peacocks with long tail.
It looks like a circular argument. It is. The truth is we don’t really know for sure, at least just from the reasoning, why peacocks have long tail.
However, we do know that traits that lead to gene pool survival through sexual selection tend to be positive feedback.
Those are traits that either enhance gene pool survival through regular means or signal capability to survive on the females. Samples of the former are Cheetah’s speed and men’s wealth. Samples of the latter are peacock’s tail and sport cars.
The more peacocks have longer tail, the more peacocks in the future, will have even longer tails. The more peahens in the future will get turned on by long tail even more.
Now, most males are poor. Does that mean women like the poor? Does being poor serve gene pool survival?
The answer to the first question is no. The answer to the second is, well, sort of due to various unnatural sex laws against consensual sex. It’s tricky.
There is so much to be learned in life, sometimes I find myself overwhelmed with all that I do not know. I’ve heard it said, however, that the smartest people are the ones that know that they do not know much. I like that. I like it because I am acutely aware that there is so much that I have yet to discover and understand. I am committed, however, to the process of constantly learning more. My latest subject of fascination has been wondering and learning about earth science.
I haven’t honestly thought that much about earth science since I took a class in it in junior high school. At that time I hated everything to do with science and so I didn’t give much thought one way or another to earth science. I dreadfully made it through that class learning only the basics enough to get by (not the least of which I can remember now).