Sustainable energy is energy that is produced by renewable, natural sources that are not considered harmful to future generations. Examples of sustainable energy sources include wind, ocean waves and the sun. More »

Sustainable energy includes energy forms able to meet the growing needs of humans without compromising future demands, while renewable energy sources are widely available, naturally replenished and have low environmental... More »

According to Merriam-Webster, a sustainable resource is one which is used or harvested in such a way that it is not depleted or permanently damaged. Agriculture is an example of a sustainable resource. Proper management ... More »

Advantages of using geothermal energy include lower operating costs than many other fuel sources, pollution-free energy creation, and a reduction in the use of non-renewable fossil fuels such as coal and oil. Further adv... More »

www.reference.com Science Earth Science

Phys.org and the websites of the ScienceDaily and Discover Magazine are three sources for current events and issues in earth science, as well as other branches of science. EvolutionNews.org is a website of the Discovery ... More »

www.reference.com Science Earth Science

Earth's primary sources of heat are from radioactive decay, frictional heating and Earth's formation. Although Earth was created around 4.5 billion years ago, there is still leftover heat from its formation. More »

The sun's energy comes from the nuclear fusion reactions that happen within its core. When atoms of hydrogen come together in the core of the sun, they fuse to become another element: helium. This reaction produces energ... More »