Critics say it’s an unwarranted centralization of power that sidelines local officials, and they worry it will increase new ...

A longtime critic of U.S. biofuels says an expansion of biofuels policy under President Donald Trump would lead to more ...

The state’s latest lawsuit charges the administration with illegally targeting its authority to set tougher vehicle-emission ...

As the Trump administration makes the economic case for the repeal of climate policies, sobering numbers emerge on health and energy costs.

Toxic air spreads hundreds or even thousands of miles from where wildfires burn. Last week, Chicago felt the sting—and ...