The LED lighting industry has emerged in recent years with the aim of replacing the more common incandescent, compact florescent, halogen and other types of indoor and outdoor lights for the commercial and residential space.

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Information leaflets and letters were distributed to residents living in the 'core zone' to help them understand the simple measures they could take, such as tilting outdoor security lights downwards instead of up, that could make difference to how dark the night sky appears.

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The LuminAID Lab founders have decided to market their lights to outdoor and recreational stores in the United States for profit.

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There are also divisions about the use of kerosene lamps on carriages as opposed to LED or flashing lights, indoor versus outdoor toilets, and whether children can access social media and other modern technology.

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And the French are not just buying fairy lights for the terrace: the biggest category sold is outdoor plants.

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The D is situated directly on the busy Fremont Street Experience, five blocks of pedestrianized bliss under a huge arched canopy of computerized lights and sound, with escalators running straight from the outdoor mall into the second floor casino.

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This beachside outdoor food market hums as nighthawks gather to feast with a view over the water, where the lights of cargo ships (and further south, Indonesia) can be readily seen.

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