Last July, career EPA officials were set to unveil their plan to complete a long-awaited health review of the toxic metal hexavalent chromium, but more than half a year later, the plan is still under wraps.

When he took over as superintendent of Yellowstone National Park last fall, Cam Sholly opted for a low-profile approach.

A decade ago, President Obama signed a package with $90 billion in energy investments. Now backers of the "Green New Deal" say their plan will be "the stimulus that Obama never really gave us."

Mandy Gunasekara is striking off on her own. The former deputy in EPA's air office recently left the agency to start her own advocacy group allied with President Trump.

California signaled yesterday that it would sue the Trump administration to defend its ability to limit tailpipe pollution.