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The environment emits and absorbs carbon dioxide and other gases as part of normal biological and geological processes. Man, however, as a result of his agricultural and industrial activities, is adding to the carbon dioxide level in the atmosphere at an alarming rate – especially since the industrial revolution. Scientists believe the resulting greenhouse effect can cause significant climatic changes if we don’t step into action. In this episode of the Environment and Ecol… More >>
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Learn what creates the Greenhouse Effect and discover how it affects weather patterns all over the world. Understand that we must take the threat of global warming seriously to ensure the continued survival of our species…. More >>
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Knowing your carbon footprint is a hot button issue today. Consumers now expect their employers, government, and schools to embrace the notion that one’s style of living can negatively affect the environment today and for future generations. Likewise, homeowners, businesses, and organizations are moving to more sustainable modes of operating, not just because it is the right thing to do, but because sustainability, being “green,” and reducing your carbon footprint h… More >>
In February 2007, the Intergovernmental Panel on Climate Change (IPCC) stated in their Fourth Assessment Report that human actions are “very likely” (i.e. with 90% or greater probability) the cause of global warming, indicated by an increase of 0.75 degrees in average global temperatures over the last 100 years. This statement is the result of very tough discussions on a worldwide scale between thousands of climate researchers whether human activity is the main cause of global warming. The results of this discussion were presented to the public in many publications, for instance in Martin Durkin´s documentary “The Great Global Warming Swindle”, presented in March 2007 at UK´s Channel 4. The main message of this production was that man-made global warming is “a lie” and “the biggest scam of modern times.” Martin Durkin and coworkers argue that the scientific consensus on climate change is the product of “a multibillion-dollar worldwide industry, created by fanatically anti-industrial environmentalists, supported by scientists peddling scare stories to chase funding and propped up by complicit politicians and the media”. The documentary showcases scientists, politicians, economists, writers, and others who are sceptical of the scientific consensus on anthropogenic (or man-made) global warming. Some of the scientists, opposing the main stream of greenhouse gas theories, simply argue that it has not yet been ascertained whether humans are the primary cause of global warming or if there are other natural variations responsible for this phenomenon like increased solar activity, cosmic rays or variations in natural climatic cycles. There is also a series of scientists questioning the temperature records used in the databases as temperature differences attributed to the greenhouse effect are reasonable small (fractions of a ºC). The so-called “urban heat island” effect leads to a local warming in more populated areas, showing slightly higher temperatures due to to increased heat generated by cities, rather than a global temperature rise. Anyhow, this argument was confuted by the IPPC, indicating that the effect of the urban heat island on the global temperature trend is no more than 0.05 °C (0.09 °F) degrees through 1990.
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