Mar 29, 2013 — The sand is pumped underground along with water and other chemicals to extract oil and natural gas trapped deep in rock. But researchers found that air samples taken at some drilling sites contained high enough levels of very fine silica particles to be dangerous to workers.
Oct 15, 2012 — Commentator Sheril Kirshenbaum says national energy strategies don't fit so neatly into red or blue compartments. The boundaries are blurry, motivated by more than a candidate's platform. Energy policies often cross party lines and she says we must open our eyes to when and where they do.
May 4, 2012 — Among the proposals: Requiring companies that are extracting natural gas to disclose the chemicals they use.
Oct 7, 2011 — Some see doom in North Dakota's oil boom, and criticized the music, tone and sourcing in a weekend story. The editor responds.
Sep 9, 2011 — In gas-volume estimates, a glimpse inside the hyper-charged debate around fracking.
Jun 2, 2011 — In the first hour of Talk of the Nation, understanding PTSD, and medical research on chimps. In the second hour, the risks and benefits of fracking, and the 175th anniversary of the Battle of the Alamo.
Oct 16, 2009 — New technology has made natural gas a promising alternative in reducing the United States' dependence on other countries for energy sources. Natural gas is cleaner than other fossil fuels, and some experts say there's enough untapped natural gas i...