Holly Energy Partners has taken the unusual step to request a public hearing on its project before the Colorado Air Quality ...

Experts at startup Lydian are tackling air pollution on its home turf in the sky — by developing a carbon-neutral jet fuel ...

This story was originally published by Grist and is reproduced here as part of the Climate Deskcollaboration. Cities looking ...

GOP lawmakers say Arizonans are feeling the pain at the pump, and add the bill offers economic relief and prevents future ...

The system can cool and heat without using volatile refrigerants or burning fossil fuels by exploiting the “elastocaloric effect” in nickel-titanium (Ni-Ti) shape memory alloys. Dubbed elastocalorics, ...

After six years in development, Robinson's first product, the twin-blade, two-seater R22, entered production ... Its larger six-cylinder Lycoming air-cooled boxer engine helped the R44 cruise ...

Smith sees the market capable of supporting more than 100 deliveries per year, contributing to a total annual output goal of over 1,000 helicopters annually, including the R22, R44 and R66 models ...

The gas station clerk told police he saw a group of boys approaching the store and recognized them because they stole from the store in the past. The clerk told police he used a magnet lock to ...

TUCSON, Ariz. (KVOA) – Circle K is offering a significant discount on fuel for its Inner Circle Rewards members March 6. Members will enjoy savings of 40 cents per gallon at participating Circle ...

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