http://www.azocleantech.com The Lastest Clean Technology Articles from AZoCleantech - The A to Z of Clean Technology en Copyright 2001-2008, AZoM.com Pty Ltd Geothermal energy radiates outwards from the core and heats the surrounding areas. The potential of geothermal energy in the uppermost 6 miles of the Earth's crust amounts to 50,000 times the energy of all oil and gas resources in the world. http://www.azocleantech.com/details.asp?ArticleID=68 A number of promising vehicle fuels is in initial stages of development. These alternative vehicle fuels offer benefits such as reduced emissions, increased energy security and decrease our reliance on foreign oil. http://www.azocleantech.com/details.asp?ArticleID=67 Photolytic process involves the use of light to break water up into hydrogen and oxygen. The long-term possibility of a sustainable hydrogen production with low environmental impact can be offered by photolytic processes. http://www.azocleantech.com/details.asp?ArticleID=66 The most valuable natural resource is water and most people are aware of the limited supply and importance of water especially in dry continents such as Australia. Rainwater harvesting is a three step process involving the collection of rainwater from surfaces such as roofs; the storage of rainwater and the distribution of rainwater for indoor or outdoor use. http://www.azocleantech.com/details.asp?ArticleID=65 Special materials are used for the construction of photovoltaic cells. These materials are called semiconductors. http://www.azocleantech.com/details.asp?ArticleID=64 How to best offset emissions to slow global warming is among the puzzles that face policymakers, scientists, engineers and the commercial sector. For example, would carbon sequestration pose more advantages than disadvantages? http://www.azocleantech.com/details.asp?ArticleID=63 Most oceanographers have assumed that, in the areas of the world's oceans known as High Nutrient, Low Chlorophyll (HNLC) regions, the iron needed to fertilize infrequent plankton blooms comes almost entirely from wind-blown dust. Phoebe Lam and James Bishop of the Earth Sciences Division at the Department of Energy's Lawrence Berkeley National Laboratory have now shown that in the North Pacific, at least, it just ain't so. http://www.azocleantech.com/details.asp?ArticleID=62 University of Utah physicists developed small devices that turn heat into sound and then into electricity. The technology holds promise for changing waste heat into electricity, harnessing solar energy and cooling computers and radars. http://www.azocleantech.com/details.asp?ArticleID=61 Nuclear energy is the energy that comes from the core or the nucleus of an atom. The bonds which hold the atoms together contain a massive amount of energy. This energy must be released in order to make electricity. This energy can be freed in two ways: nuclear fission and nuclear fusion. http://www.azocleantech.com/details.asp?ArticleID=60 Atmospheric carbon dioxide levels are rising at an alarming rate, and new research indicates that soybean plant defenses go down as CO2 goes up. Elevated CO2 impairs a key component of the plant’s defenses against leaf-eating insects, according to the report. http://www.azocleantech.com/details.asp?ArticleID=59