Those already interested in philanthropy can use it as an image-scrubber, she added.

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Just as air-conditioning increases a car's fuel consumption, so does a plasma scrubber.

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The project intends to use a proprietary process employing an in-duct scrubber to reclaim the alkaline clay produced as the primary by-product of the aluminum manufacturing process.

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Critics of existing scrubber technology however point out that the technology only removes the toxic chemicals from the atmosphere at the expense of depositing them in the ocean as contaminated waste water.

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The VF app offers the same scrubber, but its floating nav bar works only in portrait mode, forcing the user to switch out of landscape if he wants to bounce back to the Table of Contents.

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Aluminum foil as glassware scrubber: To get baked-on food off a glass pan or an oven rack, use dishwashing liquid and a ball of foil in place of a steel-wool soap pad, says Mary Findley, president of the cleaning-products developer Mary Moppins.

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It offers three ways to navigate the issue, and each works in both orientations a scrubber across the bottom of the screen, a left-side nav bar that scrolls up and down and a top-side display of thumbnails that flow left to right.

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