The Earth's tilt also changes just a few degrees over a period of 40,000 years or so, but enough to change the position of the polar ice caps relative to the Sun. Finally, the procession of the equinoxes also moves the poles closer to or further away from the Sun over a period of approximately 23,000 years. Each of these cycles by itself may not have a noticeable effect, but taken together, the effects could be profound. Geologists have found direct relationships between these cycles and the weather extremes present during greenhouse and icehouse ages.
As for the man-made greenhouse gasses, according to many environmentalists and the EPA, since the beginning of the industrial revolution atmospheric concentrations of carbon dioxide have increased nearly 30%, methane concentrations have more than doubled, and nitrous oxide concentrations have risen by about 15% . These increases have enhanced the heat-trapping capabilities of the Earth's atmosphere. Sulfate aerosols cool the atmosphere by reflecting light back into space; however, sulfates are short-lived and vary regionally. Some scientists believe that the combustion of fossil fuels and other human activities are the primary reason for the increased concentration of carbon dioxide. The Committee on the Science of Climate Change states that temperatures are, indeed, rising with the global mean surface air temperature warmed by about 0.4-0.8°C during the 20th century. The Committee also states that the changes observed over the last several decades are "likely mostly due to human activities, but the Committee cannot rule out that some significant part of these changes are also reflections of natural variability-. This committee believes that human-induced warming and associated sea level rises are expected to continue through the 21st century. The secondary effects they expect include increases in rainfall rates and increased .
Global Warming: Fact or Fiction What is global warming? ... This is more common sense than scientific fact, and has nothing to do with global warming. ... Until recently very few, if any global warming models included these effects. ... Global warming is nothing but a lie, hoax and myth. ... The only thing that comes from the myth of global warming is fear, and paranoia. ...
The differences of the facts were caused by this intriguing global warming that alarmed all the people in the world. ... Fact or Fiction An Inconvenient Truth presents ex vice- president Al Gore and his passion to help save our planet. ... Gore distinguishes between fact and fiction. ... Gore focuses on the main issues that affects us as a whole by concentrating on the facts and setting politics aside.. ... Gore presents horrifying facts, yet hope is still visible. ...
As I continue to research, interview, and collect information pertaining to the history of Grindstone Island, its places, people, and memories, I continually have to discriminate between facts and opinions presented. ... Through detail I am able to relate many experiences where fact verses opinion are important. ... An informed, contributing, United States and global citizen must understand the structure and function of government at all levels. ... Performance after performance we witness the tears and feel the warm embraces of complete strangers, who at that moment, feel closer to us, tha...
We are, in fact, the fastest advancing species on this planet. ... That would hold a tremendous global impact, especially since its clean energy. ... Now will a global solar power infrastructure we would save countless hours for people in undeveloped parts of the world, giving them time to use that saved time to advance culturally, technologically and commercials, wiping out poverty allowing them to be part of the global corporate pie. ... But the fact still remains, our sun cannot burn forever, its lifespan, however long it may be it is still not infinite. ... This all sounds like science...
The Comet and Aye and Gomorrah are two science fiction short stories that discuss racism and sexuality in post-apocalypses, respectively. In The Comet, W.E.B. Du Bois describes the relationship between a black man, Jim, and a white woman, Julia, after a comet hits New York City and kills everyone ex...
These Atlantis writers fall into four main categories: 1) Those who accept Plato's story as perfectly true. 2) Those who believe that Atlantis did exist, but not in the Atlantic Ocean, and suggest various other locations. 3) Those who claim that the Atlantis story is a compilation of legends and historical facts relating to various peoples and different ages. 4) Those who believe that the story is fictitious and an invention of Plato's imagination. ... Atlanteans ran their water supply with expert efficiency: "The springs they made use of, one being of cold, another of warm water,...
There are many misconceptions about wetlands that the public has due to the fact that there is not much public interest to save the wetlands. ... In fact a wetland produces just as much life as a rain forest of the same size, and they are both being destroyed at about the same rate (Mitchell, J. (1992, October). ... Lets say for a moment that there is a utilitarian who doesn't eat fish, cares not for bird watching or bio-diversity, and never listens to the reports on global warming. ...
What Shamanism Is By the Silver Circle Shaman (pronounced SHAH-maan) is a word from the language of the Tungus people of Siberia. A Shaman is a man or woman who enters an altered state of consciousness at will. The Shaman does this to contact and utilize an ordinarily hidden reality to acquire knowledge, power and to help others. The Shaman usually has at least one or more spirits in his or her personal service. The trance or "ecstatic" state of consciousness the Shaman enters can be termed as the Shamanistic State of Consciousness (SSC). ...
