Find out what nitrogen oxides (NOx) are, why they are a serious environmental concern, and what role they play in the Volkswagen diesel engine scandal.

Modern fertilizer manufacturing uses the Haber-Bosch and Ostwald processes to fix aerial nitrogen as ammonia, then oxidize ...

A chemical reaction that created nitrogen oxide gas, which was vented to the atmosphere, forced evacuations and raised concerns in southeast Ohio on Wednesday, June 11.

We currently use a lot of ammonia to produce fertilizer, refrigerants, and other chemicals, and unfortunately rely heavily on ...

Residents of Vinton County returned to their homes late afternoon June 11 after being evacuated due to what the Ohio Environmental Protection Agency says was a nitrogen oxide gas release from an ...

Alabama has scheduled an August execution with nitrogen gas for a man convicted three decades ago of shooting a woman in the head while she slept.

A chemical leak from an explosives manufacturing plant is prompting evacuations Wednesday in and around Zaleski in Vinton County, according to the sheriff’s office.

Nitric acid entered a process and reacted with the container, which created nitrogen oxide gas that escaped into the air, according to the Ohio Environmental Protection Agency (EPA).

The reaction in the tank created nitrogen oxide gas and vented into the air. Photos sent by a 10TV viewer show the sky filling up with an orangish-brown gas.

We have not identified any injuries or adverse health impacts at this time. Austin Powder confirms that nitrogen oxide (NOₓ) emissions from its Red Diamond Plant have ceased.

A group of 11 states led by California on Thursday filed suit challenging a repeal by Congress of the state's 2035 electric vehicle rules and heavy duty truck requirements.

Trump also signed measures to overturn state policies curbing tailpipe emissions in certain vehicles and smog-forming nitrogen oxide pollution from trucks.