Amazon threw its support behind a Washington state bill to trim carbon emissions from motor vehicle fuels sold in the state.

A proposed Washington carbon emissions tax drew support from environmentalists, activists for low-income residents, communities of color.

A Maryland House committee on Monday rejected a proposed carbon pricing bill, with eight Democrats siding with seven Republicans in opposition.

Massachusetts could be the first state to allow residents to donate their tax refunds to help developing nations build resilient communities.

The Colorado AQCC enacted the nation’s strictest rules around methane emissions from the pneumatic controllers used in oil and gas production facilities.

National Grid is participating in research to determine how to convert existing gas networks to support hydrogen that could be used for home heating.

Connecticut DEEP Commissioner Katie Dykes spoke about the state’s latest IRP and its recommendations for a carbon-free electric supply by 2040.