When Sen. Edmund Muskie, a Maine Democrat, introduced the Clean Air Act of 1970, he warned his colleagues that unchecked air pollution would continue to “threaten irreversible atmospheric and ...

The Environmental Protection Agency (EPA) has made a courageous and necessary decision in proposing to rescind the 2009 Endangerment Finding for greenhouse gas (GHG) emissions. EPA Administr ...

In 2007, when the court ruled that the Clean Air Act of 1970 gave the Environmental Protection Agency the flexibility to regulate carbon dioxide emissions, former Justice John Paul Stevens wrote ...

Carbon dioxide acts like Earth’s thermostat: The more of it in the air, the more the planet warms. In 2023, global levels of the greenhouse gas rose to 419 parts per million, around 50 percent ...