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26 articles with between 500 and 700 words, including:

Alternative Energy Development in Japan
Alternative Energy for the Home
Alternative Energy from the Ocean
Alternative Energy in Ireland
An Alternative Energy Education Method

and many more...

There has been much debate about what is often called “free” energy—energy that can supposedly, with the right technology, be drawn straight out of the atmosphere, and in very abundant supply. The debates are about whether the stuff actually exists or not, what it would actually cost were it to be harnessed, and if it does exist is it truly as abundant and efficient as it's being made out to be by proponents of research and development into this potential alternative energy source.