Identify What Is Junk

What is “Junk Science”?
I have to write a paper on “Junk Science” and I tried search it, but not sure what is correct or not and here are some questions that I have to answer in my paper… any information would be helpful. Thanks!
What does the phrase Junk Science refer to
How does Junk Science differ from the established and accepted scientific method, if at all
Why is Junk Science ‘bad’, Can it be ‘good’
What are some examples of Junk Science
What is meant by the statement: “You can always tell if its junk science; just follow the money.”
In short, how can we identify and avoid Junk Science; What are the ‘telltale signs’?
Junk science is a term used in U.S. political and legal disputes that brands an advocate’s claims about scientific data, research, or analyses as spurious. The term may convey a pejorative connotation that the advocate is driven by political, ideological, financial, or other unscientific motives.
http://junkscience.com/define.html
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