Take a look at what every student scurrying to write a paper for class will encounter when they go to Wikipedia to learn about shale gas. http://en.wikipedia.org/wiki/Shale_gas. With a footnote that cites only the Howarth paper, Wikipedia states, "However there is growing evidence that the extraction and use of gas results in the release of more greenhouse gasses than conventional natural gas, and may lead to emissions greater than those of oil and coal."
Wikipedia has got it backwards. In fact, there is more than growing evidence that the Howarth paper is junk science. An avalanche of studies--at least six--refuting Howarth has been published. Perhaps, Wikipedia could be persuaded to more accurately reflect the science.
In the meantime, the Howarth study is an example of a lie that gets around the world, while the truth is putting on its boots.