In the United States, national ambient air quality standards have led to efforts to reduce human emissions that cause pollution.

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Edison is very concerned about local ambient air quality and environmental-justice issues.

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Incoming cooler ambient air from the other end of the piston causes the helium to contract and move the piston to generate AC power.

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The removal of carbon dioxide from the atmosphere, either through the enhancement of natural weathering processes or direct capture from ambient air are further examples, as well as the enhancement of oceanic CO2 uptake through ocean fertilisation with scarce nutrients or the enhancement of upwelling processes.

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The future of clean tech is already looking bright, as the world's solar power capacity just hit a record 101 gigawatts, and researchers found a new way to charge batteries by harvesting ambient electromagnetic waves from thin air.

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For now, it can analyze ambient room temperature, moisture in the air, light concentration or color, displaying its readings on an iPhone or iPad.

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However, that distance depends largely on factors such as vehicle speed, number of passengers, ambient temperature and use of accessories like heating and air conditioning.

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