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The economies of many nations depend on marine traffic along such navigable rivers as the Mississippi in the USA, the Danube in Europe, the Yangtze of China, the Panama Canal and the St Lawrence River that serves both the USA and Canada. Ships traveling on water invariably generate bow waves more...
Changing weather patterns have reduced rainfall over the watershed area of the Colorado River and raised the specter of drastic reductions in power output from the Hoover Dam. The increasing demand for electric power from Southern California and Northwestern Mexico raises the prospect of increased co-operation between the USA and more...
A lack of precipitation during late 2009 and 2010 resulted in lower than usual water levels in the Great Lakes and along the St Lawrence River, where new islands appeared. Ships had to sail at reduced load due to reduced navigation depth. Measured water levels at Montreal are over 2-metres more...
The month of June marks World Environment Day and World Ocean Day, two environmentally conscious days whose main purpose is to spread awareness of environmental issues taking place in today's world. However, a black cloud hangs over this year's events as 42,000 gallons of oil a day 1 gushes into more...
Posted By: Howard Hanson
- Ph.D, Professor of Geosciences, Florida Atlantic University
On: August 26, 2009
On: August 26, 2009
Because energy use in the United States is so dominated by fossil fuel combustion -- the Department of Energy estimates that dominance at about 85 percent -- it is not an overstatement to suggest that the country has nearly all of its energy eggs in a single basket. The fact more...
A new study says geothermal energy is the most efficient source among renewable energy resources and could become cheaper than fossil fuel-generated energy with a concerted government research effort. New York University Stern School of Business Professor Melissa Schilling finds that the cost of generating electricity with geothermal or wind more...
The excellent summary of the ocean power scene by Peter Asmus in Issue 6 of the Energy Central Renewables Topic Center highlighted a number of matters that are of increasing importance as ocean power technology matures. At one point, he suggests that up to 200 GW of marine renewables might more...
Canada has literally been a `powerhouse' of energy resources for decades with hydroelectricity, natural gas and oil playing a major role in the nation's economy, but only recently has begun paying serious attention to the potential for electrical production from geothermal energy to help meet the demand for "green, renewable" more...
While the total installed capacity of emerging "second generation" marine hydrokinetic resources -- a category that includes wave, tidal stream, ocean current, ocean thermal and river hydrokinetic resources -- was less than 10 MW at the end of 2008, a recent surge in interest in these new renewable options has more...
For Michael Yackira, president and chief executive officer of Reno-based NV Energy, deciding whether to purchase geothermal energy to meet the state's renewable portfolio standard is a no-brainer. It's been commercially viable for a long period of time," Yackira said. "For us, it's always been the most competitive of the more...
