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inventors and their inventions Essay - 386 Words
Female simians usually stay within their society of origin, while males leave. That is how simians prevented , but that pattern is reversed in chimpanzee and gorilla societies, in which females usually leave. Sexual coercion of females is common behavior among simians. and are among the few simians that overcame it, and it seems to have been due to ecological dynamics. Humans have partially discarded that behavior during the industrial age. Those are obviously highly charged areas of behavioral research, and is a scientific discipline. A is arguably the of science, and behavioral sciences have often been plagued with a lack of them, going back to , which has caused some to say that psychology is not really a science. This essay will soon sail into some of those murky waters.
I am taking some liberties in calling Turkana Boy a ; he is technically a member of , which is often considered ancestral to , which is the Asian variant’s name. There is great debate regarding how the human family tree branches between and . Some call the various -type species all subspecies of , while others argue for several distinct species. I will not stray far from the orthodox narrative here, for good reason. The reconstructed early human tale is based on very limited evidence, but that evidence will only grow over time, and the tools and techniques for using them will become more sophisticated. Although there may be some upcoming radical changes in the view of the early human journey, efforts of countless scientist and fossil hunter lifetimes support the narrative that this essay sketches, and I respect their findings and opinions, even though I acknowledge many limitations. The human ego, it seems, becomes more involved as the story of life on Earth moves closer to its human chapters.
Inventors and Their Inventions - Photo Essays - TIME
In the 1990s, I found the dating issue enthralling and saw it assailed by fringe theorists and by . A couple of decades later, I reached the understanding that, like all sciences, dating has its limitations and the enthusiasm for a new technique can become a little too exuberant, but dating techniques and technologies have greatly improved in my lifetime. Dating the , and using 100,000-year increments to place the dates, may seem a conceit, thinking that scientists can place that event with that precision, but over the years my doubts have diminished. When and can be tested, and the findings support not only Earth’s age previously determined by myriad methods, but also support the prevailing theories for the solar system’s and Moon’s formation, call me impressed. Controversies will persist over various finds and methods used, and scientific fraud certainly occurs, but taken as a whole, those converging lines of independently tested evidence make it increasingly unlikely that the entire enterprise is a mass farce, delusion, or even a conspiracy, as many from the fringes continue to argue. There is still a , and it is not a parody. I have looked into fringe claims for many years and few of them have proven valid; even if many were, their potential importance to the human journey was often minor to trifling. As the story that this essay tells comes closer to today’s humanity, orthodox controversies become more heated and fringe claims proliferate.
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Famous Scientists and Their Inventions - Buzzle
, who had a scientific career at General Electric, also believed that the energy industry would welcome his solid-state FE device. He , expecting a tickertape parade. The opposite happened as shadowy interests destroyed his business deals, in a situation . Sparky did not take the hint and kept trying, which led to death threats. After their final threats, Sparky fled into hiding, where , and Sparky died the next week of a “heart attack.” Dying that way who played near Sparky’s level, and , and the event shortened his life. Dennis, Sparky, and many others like them lost their naïveté the hard way, but the field has been filled with newcomers who deny the reality of organized suppression as they charge forward with visions of riches and fame. It is perhaps the most common level of awareness where FE newcomers will be found. Most never develop anything worth suppressing so will never know any differently, and will enter and leave the field with that beginner's level of awareness intact. However, with enough people trying and either living to tell the tale, or others chronicling their dire fates, which , and the Internet spreading information like never before, few FE newcomers have much excuse for being unaware of the fates of their professional ancestors. The Internet is like the , or the , ratcheted up by a few orders of magnitude, and my website, this essay, and my comprise my attempt to take advantage of its potential.
I always respected Dennis and Brian the most in the FE field, and I valued their integrity above all else. Their great hearts attracted me to them, not their talent, genius, or fame. I have written plenty about my days with and , and interested readers can discover more if they wish. I hope to convey what the learning experience of carrying their spears was like. My and comprised the kind of education that few survive for long. Although my education with Brian was far gentler, I learned important lessons from him. If not for my adventures, I would not have much worth saying. Even though much of this essay “merely” deals with mainstream science theory and data, . This essay is obviously not the work of a professional scientist, historian, or economist.
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Pakistani Scientists Names and Their Inventions
But the branch of the that readers might find most interesting led to humans. Humans are in the phylum, and the last common ancestor that founded the Chordata phylum is still a mystery and understandably a source of controversy. Was our ancestor a ? A ? Peter Ward made the case, as have others for a long time, that it was the sea squirt, also called a tunicate, which in its larval stage resembles a fish. The nerve cord in most bilaterally symmetric animals runs below the belly, not above it, and a sea squirt that never grew up may have been our direct ancestor. Adult tunicates are also highly adapted to extracting oxygen from water, even too much so, with only about 10% of today’s available oxygen extracted in tunicate respiration. It may mean that tunicates adapted to low oxygen conditions early on. Ward’s respiration hypothesis, which makes the case that adapting to low oxygen conditions was an evolutionary spur for animals, will repeatedly reappear in this essay, as will . Ward’s hypothesis may be proven wrong or will not have the key influence that he attributes to it, but it also has plenty going for it. The idea that fluctuating oxygen levels impacted animal evolution has been gaining support in recent years, particularly in light of recent reconstructions of oxygen levels in the eon of complex life, called and , which have yielded broadly similar results, but their variances mean that much more work needs to be performed before on the can be done, if it ever can be. Ward’s basic hypotheses is that when oxygen levels are high, ecosystems are diverse and life is an easy proposition; when oxygen levels are low, animals adapted to high oxygen levels go extinct and the survivors are adapted to low oxygen with body plan changes, and their adaptations helped them dominate after the extinctions. The has a pretty wide range of potential error, particularly in the early years, and it also tracked atmospheric carbon dioxide levels. The challenges to the validity of a model based on data with such a wide range of error are understandable. But some broad trends are unmistakable, as it is with other models, some of which are generally declining carbon dioxide levels, some huge oxygen spikes, and the generally relationship between oxygen and carbon dioxide levels, which a geochemist would expect. The high carbon dioxide level during the Cambrian, of at least 4,000 PPM (the "RCO2" in the below graphic is a ratio of the calculated CO2 levels to today's levels), is what scientists think made the times so hot. (Permission: Peter Ward, June 2014)
Inventors And Their Inventions Essay Help
Mass extinction events may be the result of multiple ecosystem stresses that reach the level where the ecosystem unravels. Other than the meteor impact that destroyed the dinosaurs, the rest of the mass extinctions seem to have multiple contributing causes, and each one ultimately had an energy impact on life processes. The processes can be complex and scientists are only beginning to understand them. This essay will survey mass extinction events and their aftermaths in some detail, as they were critical junctures in the journey of life on Earth.
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