Big changes are happening at the Environmental Protection Agency (E.P.A.), and they’re causing quite a stir. The agency is reportedly demoting career employees who oversee critical areas like scientific research, pollution enforcement, and hazardous waste cleanup. In their place, political appointees tied to the current administration are stepping in.

This move is sparking concerns about partisanship creeping into roles that have historically been nonpartisan. These positions were once led by experts who served across both Republican and Democratic administrations, focusing more on science and less on politics.

Officials say this kind of reshuffling is nothing new. A spokesperson for the E.P.A. mentioned it’s “common practice” and aligns with how other federal agencies operate. But critics argue it’s a way for the administration to bypass Congress, as these new appointees can act as department heads without needing Senate approval.

The E.P.A. has been a focal point for environmental policies, especially under the Biden administration, which prioritized climate change efforts. Now, with these changes, some worry the agency’s mission could shift. The Trump administration faced pushback from career staff in its first term when it tried to roll back environmental protections. This time, they seem better prepared to make significant changes.

Adding to the concern, several top roles are being filled by individuals with ties to the oil and chemical industries. For example, the nominee for deputy administrator recently challenged a ban on asbestos, and others expected to take key positions have lobbied for oil and chemical interests.

While the E.P.A. insists these changes are standard, many are watching closely to see how this shift will impact the agency’s work and the environment. Will science take a backseat to politics? Only time will tell.