When an EPA study concluding that hydraulic fracturing "poses little or no threat" to drinking water supplies was published in 2004, several EPA scientists challenged the study's methodology and questioned the impartiality of the expert panel that reviewed its findings.
See: Halliburton's Interests Assisted by White House - Los Angeles Times.
See: The American Association for the Advancement of Science (AAAS) Reaffirms Statements on Climate Change and Integrity. 12/04/09.
