Since the Collapse of the once strong Classic Maya civilization, archeologists have tried to unearth and understand what caused such a big society to perish. There are many theories to why the Classic Maya had their falling, but the one that will be focused on this research will be the collapse due to lack of sufficient rainfall causing prolonged periods of drought.
The documentary Climate of Doubt talked about whether climate change was a scientific truth, it provided many details about the denial of climate change, which I was not familiar with. Although majority of the scientists, precisely, 98% of the climate experts, believe that the major cause of climate change is human activities; there are plenty of people reckon that climate change is a kind of natural phenomenon. They also point out that global warming consensus is not based on science, but for the political purpose. From my perspective, the severity of climate change indeed can affect the decisions of policy-makers, such as green policy and governance. But it does not mean that people can just ignore the consequences of the enormous emission of greenhouse gases in the past few decades.
Climate change is a very serious and growing problem in our world today. It can be defined as a change in global or regional climate patterns, and is accounted for the increased levels of atmospheric CO2 produced by fossil fuels. There are various factors that partake in climate change both natural and human, but scientists believe the largest component is the greenhouse effect, (process by which radiation from a planet 's atmosphere warms the planet 's surface to a temperature above what it would be without its atmosphere). Some long-term effects of climate change can include an increase in heat waves and heavy precipitation, a decrease in sea ice, an increase in permafrost thawing, and decreased water resources in semi-arid regions (USGS Science for a changing world, Campbell).
“According to Patrick Moore “There is no scientific proof that human emissions of carbon dioxide (CO2) are the dominant cause of the minor warming of the Earth’s atmosphere over the past 100 years. If there were such a proof it would be written down for all to see. No actual proof, as it is understood in science, exists.” (ProCon.org. (2017, March 1). Climate Change Debate ProCon.org. Retrieved from http://climatechange.procon.org/.) Climate change is a serious thing and began in the 20th century where it started a change in the global air. This can cause problems in the near future, and can be produced by natural causes such as a cyclical change in the weather. Scientist’s say that the world isn’t heating up by human activity,
The Canadian Arctic is one of the extremely coldest climates known on Earth with the temperature of -28°C and -70°C during winter and in summer around 12°C which makes it very hard to survive unless you have appropriate shelter to keep you warm in freezing cold temperature. They had to discover a natural way of keeping them warm under shelter, For this particular reason, people who lived in that environment were forced to accommodate themselves by building with the material they had available and survive by using the techniques of passive engineering.
The article, “Melting Glaciers blamed for subtle slowing of Earth’s Rotation,” by Will Dunham, talks about how the melting of glaciers appears to be slightly slowing down the Earth 's rotation. Also about how the melting of glaciers are due to the world 's temperatures. At the beginning of the article William Dunham states that the driving force behind the discernible change in the Earth 's rotation is measured by satellites and astronomical methods. Also that the global sea level rise is fuelled by an influx of meltwater into the oceans from glaciers. A geophysicist, Jerry Mitrovica, explained more on this problem when he said, “Because glaciers are at high latitudes, when they melt they redistribute water from these high latitudes towards
Richard Lidzen’s article Global Warming: The science in Three Nutshells explores the idea of global warming from three different perspectives, the scientists, the skeptics and the media. The opinions seem to be similar but their differences are what the article is focusing on. There is a lot of information out there and Lidzen is set to clear that up.
According to the Alaska Dispatch News article. Glaciers are melting drastically and loosing 75 billion tons of ice a year. If all the glaciers melt in Alaska then a foot of water will be on top of the land from the melted glaciers. From the recent climate changes of the weather getting warmer, the glaciers are melting faster. Sea level is also rising from the melting of glaciers. Anchorage is under sea level therefore Anchorage may become a lake. Also the Cook Inlet sound is along Anchorage and current flows fast along the bay of Anchorage. (Rosen, 2015)
Climate change is believed to be the biggest issue facing the Earth. It is a long-term change in the Earth’s temperatures and climate (“Climate Change”, Dictionary.com). Our atmosphere is part of the reason why we can live on Earth with reasonable temperatures. Humans have been emitting unnatural greenhouse gases, like coal, oil, and gas. This is changing the natural systems that take place in our atmosphere. When all these extra gases are released, carbon dioxide stars to accumulate in the atmosphere. Climate change is a global issue because when the temperature of the Earth changes even very slightly, it can cause droughts and our crops can die. This is affecting our food supply. Also, when water levels rise even slightly, it can be very destructive for
Arctic ice reflects 80 percent of the sunlight back into space. As sea ice melts there will be more sunlight hit the ocean which increase the temperature of the ocean and cause raise of sea level. Satellite observations show that Arctic sea ice concentrations have significantly decreased over the last 25 years. Submarine observations also suggest that the Arctic ice pack has thinned dramatically in the last 20 to 30 years. As the sea ice melts the sea level increase. Sea level is now rising by 3.1mm per year. At this pace, more than 2.5 m sea level rise by 2040.
The early Americans came to what is now America thousands of years ago. They migrated over from Asia by crossing the land bridge called Beringia. They crossed the land bridge while hunting for food because of their nomadic lifestyle. After a while they developed culture because of the Ice Age started to melt which lead to agriculture. They had to get used to these changes, of course it took some time and there was still a nomadic lifestyle but they lived.
The controversy originated in Michael Crichton’s book, State of Fear, where he asserted that the cooling observed in Antarctica shows the lack of reliability of the global warming models; and climate theory in general. The release of the book led to other media outlets picking up the argument and labeling it the “Antarctic Cooling Controversy,” but the controversy is flawed
While orbital forcing is the primary external driver of glacial cycles, carbon dioxide content in the atmosphere plays this important internal feedback role (Pittock, 2005). Evidence for environmental change in the Pleistocene epoch include constituents of gas bubbles trapped in ice cores. According to BAS Natural Environment Research Council (2015), Ice cores are cylinders of ice drilled out of an ice sheet or glacier, with most of them coming from Antarctica and Greenland. Looking at ice cores can provide direct information about past climate change, going back as far as at least 800,000 years. They also provide evidence that under some circumstances climate can change abruptly. When air is trapped at the base of an ice core and the compacted snow turns into ice, the air is trapped in bubbles. The concentration of greenhouse gases such as carbon dioxide and methane in the layers of ice cores is evidence of how climate has changed in the past, as ice core data has shown that there were high concentrations of carbon dioxide during interglacials and low levels of carbon dioxide during glacials. It also allows scientists to compare modern concentration of greenhouse gases to the past as well as links between past concentrations of greenhouse gases to temperature (Davies, 2015). Data has suggested that when there is a change in carbon dioxide concentration in the surface waters of the ocean this may affect atmospheric concentrations, which could result in the warming or cooling to the Earth’s climate. The fact that the concentration of carbon dioxide in the environment is linked to temperature shows that small changes in climate can be amplified by an increase or decrease in carbon
BP is a British-based multinational oil company, and is currently the third largest energy company in the world. BP contribute £7.7 billion to the UK economy on jobs alone, and contribute £8.4 billion into the UK GDP. They employ 85,000 people worldwide, 18,000 of which are in the UK. From June 2014 to June 2015, BP͛s total revenue was $283 billion - $44 billion of which was profit. The majority of this profit comes from producing and selling fossil fuels worldwide.Climate change is a controversial topic that has been under discussion for several decades. While there are multiple potential causes, the main consensus is that climate change is a result of human activity, particularly in relation to the use of fossil fuels and the emission of
Two common arguments against human-caused climate change are “greenhouse gases aren’t causing climate change – it’s actually the sun, volcanoes, or some other source (Governor’s Office of Planning and Research, 2011),” and “there is no solid evidence of global warming (Herath, 5 Oct 2011).”