Environmental Defense Fund
Colorado oil and natural gas regulators on Monday approved rules making the state the first to require energy companies to do groundwater sampling both before and after they drill.
President Barack Obama had good reason to choose Colorado for a backdrop Thursday talking about energy policies.
An energy company executive’s deed at an industry conference this month is bringing attention to new recipes for hydraulic fracturing fluids.
Environmental groups have filed two lawsuits in federal court over power-plant emissions in Colorado.