Wouldn't/shouldn't Scientists know about things based on data and experimentation? What is this belief stuff?
It took me all of 10 seconds to search Google Scholar and find over 19,000 scientific papers going back to the 1970s discussing human-induced seismicity from fluid injection wells.
http://scholar.google.com/scholar?hl=en&q=injection+fluids+seismicity&btnG=&as_sdt=1%2C47&as_sdtp=
Have you ever read an actual scientific paper in your entire life? If not, why are you posting on this thread?