Forecasts indicate that worldwide demand for new base-load electrical power generation capacity will continue to grow throughout the twenty-first century. However, evidence is mounting to show that the use of fossil fuels—coal, oil, and natural...

Active solar technologies are employed to convert solar energy into usable heat, cause air-movement for ventilation or cooling, or store heat for future use. Active solar uses electrical or mechanical equipment, such as pumps and fans, to increase the...

The peak of the next sunspot cycle is expected in late 2011 or mid-2012 _ potentially affecting airline flights, communications satellites and electrical transmissions. But forecasters can't agree on how intense it will be.A 12-member panel charged with forecasting the solar cycle said Wednesday it...

Democratic presidential candidate John Edwards on Tuesday defended the construction of a sprawling, 28,000-square-foot house in North Carolina, arguing that his home is a model of energy efficiency."The house was built from the beginning, both in its location for passive solar and the use of...