Here, your fingers will rub against the phone's frame.

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They act as giant petri dishes, where creative types and entrepreneurs rub up against each other, combining and recombining to spark new ideas, new inventions, new businesses and new industries.

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Both for what it says about changing attitudes towards aid in Africa, as well as the more familiar chaffing that occurs when pride, philanthropy, poverty and celebrity rub up against each other.

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The rub is that voting against it would probably have worse consequences.

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Matter falling into them swirls around, and atoms rub together generating heat "like spinning a stick against another piece of wood to start a fire" and producing enough heat to make the material radiate across the electromagnetic spectrum.

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But there's the rub: they have to wait for the Forest Service to sort out the appeals against public sales of timber.

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Mr. Pistorius, a double-amputee who became the first disabled runner to compete against able-bodied athletes at the London Olympics, sat quietly as his sister occasionally leaned over to rub his shoulder.

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