You’ve seen them on the horizon,those strange machines bobbing up and down in oil fields,but have you ever wondered how oil pumpjacks actually work? These iconic structures are more than just ...

Abstract: Contamination events worldwide have brought air quality to the forefront of environmental ... achieve 87% optical transparency and can be placed atop solar panels, creating a self-powered ...

The home was built in the late 1950s and used an air conditioner and heating oil ... a heat pump offers long-term energy efficiency, savings and potential environmental benefits when powered ...