poisonous gas

A criminal investigation is underway into an accidental poisoning involving a professional-grade pesticide that left four children dead and an Amarillo woman in critical condition, police said Tuesday.

A second North Texas municipal worker has died after being exposed to poisonous gas while not wearing protective gear for breathing.

Emergency officials have evacuated a 2-mile radius near a West Texas oil well that blew out and spewed a mixture of dangerous hydrogen sulfide.

A federal investigation into a poisonous gas leak that killed four workers at a Houston-area chemical plant found weaknesses and failures in the facility’s safety planning and procedures.

The parent of a Lakewood Elementary School student says her son, and several others, were sick a day before the school was evacuated over dangerous levels of carbon monoxide gas.