This true story tells of four divers who saved a humpback whale off the coast of San Francisco...

Volcano Rising, a differentiated text with a read-aloud portion, tells the story of how volcanoes...

The country's "addiction" to oil is described and alternative energy potential from hydrogen is...

Long known as a potential power source, geothermal energy - heated water from within the Earth - is...

Is human activity causing Earth's to heat up? Is global warming just a natural event? What are the...

Introduces the history, uses, production, advantages and disadvantages, and future of hydroelectric...

Nuclear energy, with the potential to provide vast amounts of power, is a controversial topic. The...