As energy companies push to expand extraction of oil and natural gas through hydraulic fracturing, we consider some of the legal angles in this special section. Our contributors examine demands for disclosure of the chemicals used in the process; the conflict in Texas and other states between mineral and water rights; and whether global-warming considerations should matter to efforts to export fracking-derived natural gas.

Pressure Mounts to Disclose Fracking Chemicals
Wyoming leads the way, although regulators are allowing some protections for trade secrets.

In Texas, Conflict Between Mineral and Water Rights
The state’s high court will decide how fracking operations may dispose of their waste water.

The Next Big Fight Over Natural Gas Extraction
Regulator’s thinking about a Louisiana facility suggests strategies for hydrofracking critics and supporters.