carbon emissions
Posted inResearch & Developments

EPA Will Remove Carbon Dioxide Limits on Power Plants

by Grace van Deelen

Today, the Environmental Protection Agency will announce the repeal of federal limits on power plant carbon dioxide emissions, finalizing a proposed rule that the agency has been considering since last spring.

The repeal means that coal-, oil-, and gas-powered electricity plants in the United States will no longer need to limit their carbon dioxide emissions in accordance with regulations set in 2024. Those rules required existing coal-powered and new gas-powered plants to control 90% of their carbon pollution. At the time, the Biden administration estimated that the rules would result in tens of billions of dollars’ worth of public health benefits.

Posted inResearch & Developments

Temperatures in Nearly All Major U.S. Cities Have Warmed Since First Earth Day

by Grace van Deelen

After more than half a century of Earth Days, one planetary challenge—climate change—threatens our planet more than ever.

In 1970, the year Sen. Gaylord Nelson, D-Wisc., organized the first Earth Day events, the annual average concentration of carbon dioxide in the atmosphere was 326 parts per million. In 2025, it was 31% higher, at 427 parts per million.