At 23 Pathmark grocery stores, overhead lighting dimmed to nighttime shelf-stocking mode.

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With overhead lighting or a strong background source, you'll have to squint past reflections to make out the screen, even at full brightness.

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The overhead lighting at Acer's event resulted in quite a bit of glare getting in the way of our photos, as you can see.

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Light pollution can come from TV and computer screens, other electronic displays and ambient sources such as streetlights, passing traffic and neighboring buildings, in addition to overhead lighting within the home.

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The brightly coloured fabrics used for costumes, draperies and furnishings provide splashes of colour on a open, uncluttered stage that relies on a sober indirect overhead lighting to convey the illusion of daylight.

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It will also feature an improved air-filtration system and an LED lighting scheme that can be programmed to help fight the effects of jet lag, as well as larger overhead storage bins.

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