“The whole history of science shows us that whenever the educated and scientific men of any age have denied the facts of other investigators on a priori grounds of absurdity or impossibility, the deniers have always been wrong.”–Alfred Russell Wallace (co-discoverer of the Theory of Evolution)
Did you know that the guy who first published a theory of evolution, the very theory that inspired Darwin to formulate his own theory, was a Ghost hunter?
Alfred Russell Wallace was not only the “co-discover” of the theory of evolution, he was also a social activist and one of the first prominent scientists to examine the impact of humanity on the ecology of earth….he also spent a lot of time going to seances and visiting psychics. However, he visited them in order to see whether or not he, and a whole host of his colleagues (including the father of American psychology William James), could study these unexplained phenomenon scientifically.
The story of Wallace, William James, Crookes (renowned Chemist and Physicist), and other notable scientists is told brilliantly in Debra Blum’s book Ghosthunters: William James and the Search for Scientific Proof of Life after Death (http://www.amazon.com/gp/product/0143038958/ref=s9_simh_gw_p14_d0_i1?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=center-2&pf_rd_r=1AXG7J2G2CA6Z1AJKVSS&pf_rd_t=101&pf_rd_p=470938631&pf_rd_i=507846).
I highly recommend you read it and learn more.