CNN: U.S. oil reserves posted their biggest gain ever in 2011, largely thanks to the controversial hydraulic fracturing production technique, according to a new report.
The country had 29 billion barrels of "proved reserves" in 2011, a 15% increase from the 25 billion barrels in 2010, the Energy Information Administration said Thursday.
It was the third year in a row that the United States posted such an increase, and it's the highest amount of this oil the country has had since 1985.
Not surprisingly,...