The second is attrubted to Helen Caldicott, an Australian physician, author and lecturer whose main focus is opposition to nuclear energy. She actually is known for attacking global warming activists since some favor nuclear energy because of its relatively small carbon footprint.
The third quote is the one attributed to Gore from his book "Earth in the Balance". Of course, the only problem is that the "quote" is a carefully edited, out of sequence citation of a much longer statement. The actual page of the book containing the "quote" is at http://books.google.com/books?id=QDb...age&q=&f=false. The full quote would be:
"Our insatiable drive to rummage deep beneath the surface of the earth, remove all of the coal, petroleum, and other fossil fuels we can find, then burn them as quickly as they are found -- in the process filling the atmosphere with carbon dioxide and other pollutants -- is a willful expansion of our dysfunctional civilization into vulnerable parts of the natural world. [Nature] Obviously, this is still a pretty harsh statement, but gives a little more context to the misquote used on conservative blogs.
Number 4 is from John Davis, former editor of Earth First Journal, voice of a radical environmental group that he later left.
Number 5 is attributed (by conservative blogs) to former Senator Tim Wirth. However, as with most of these quotes, there is no real source cited to verify if the quote is taken in context or, like the Gore quote, artfully edited to support the biases of the quoters.