His father was a lawyer and a farmer in southern Texas,[5] and Park had originally intended to attend law school himself.

[1] He has been seen in the media as an outspoken critic of human spaceflight,[8] efforts to colonize space,[3] and the prototype U.S. National Missile Defense (as well as its predecessor SDI).

[12] Park has also expressed his opinion that Wikipedia is a target for misuse by the "purveyors of pseudoscience",[13] though he has also stated that he finds the site to be both indispensable and "cool".

[17] In 2000 Park published the book Voodoo Science, which addressed and criticized topics such as alternative medicine, telepathy and homeopathy.

[18] Reviewing the book for The New York Times, Ed Regis compared it positively to the 1957 book by Martin Gardner, Fads and Fallacies in the Name of Science, calling Voodoo Science a "worthy successor" and praising it for explaining why various purportedly scientific claims were in fact impossible.

"[24] Booklist reviewed the book positively for its lucid style, engaging with respected scientists who also hold strong religious faith and its internal logic against claims of supernatural revelation and New Age irrationality.

In a newsletter update to his readers dated July 12, 2013, Park wrote, "Many wonderful people are helping me, but recovery is a long process.

Park stated that he will continue writing his newsletter because "the public is often misled by reports in the media and unaware of it".