In 12 January letter, nonprofit group Public Employees for Environmental Responsibility urged NASA administrator Bill Nelson to review the X-59 programme in light of “climate implications”. “Supersonic aircraft consume many times more fuel and produce many times the amount of ...

An experimental jet that aerospace company Lockheed Martin is building for NASA as part of a half-billion dollar supersonic aviation program is a “climate debacle,” according to an environmental group that is calling for the space agency to conduct an independent analysis of the jet’ ...

“Oil and gas operations are particularly bad places to use PFAS—or any type of dangerous chemical—because there are so many different pathways of contamination,” Horwitt says. PFAS doesn’t just get into our water but our air, too, due to the methane-flaring methods the industry ...

But focusing on wild horses irks some conservation groups. Public Employees for Environmental Responsibility released a report of its own accusing the USGS of overstating the harm caused by wild horses to greater sage grouse habitat, while overlooking the fact there are many more cows and ...

On Nov. 17, Public Employees for Environmental Responsibility filed a petition to ban the use of lead ammunition and fishing tackle on all property managed by the National Park Service. According to the petition, this includes more than 51 million acres open to hunting, comprising more ...

In the last couple of decades, visitation to national parks has increased significantly, but the number of law enforcement officers in the parks has fallen. New findings by the nonprofit Public Employees for Environmental Responsibility show the National Park Service has reduced the number ...