And you can either stack it on top of each other high, or you can just grow the single pipe vertically, and plants will naturally sprout right out of that.

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Criticism of the disaster has sprung in part from decisions made over the design of the BP well, which used a single pipe, known as a "long string", that ran from the sea floor to the bottom of the well.

BBC: Oil spill: BP 'did not sacrifice safety to save money'

Or, to get back to our earlier metaphor, as if you could compress the entire city's sewage through a single ordinary water pipe.

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Gamers do not have to worry about excess heat while having all of their settings cranked up, keeping the laptop cool is accomplished by an efficient and quiet design using a larger, single omni-directional blower fan and dual heat pipe and heat sink system, minimizing the noise and increasing the efficiency over other designs that utilize two smaller and louder blowers.

ENGADGET: Maingear announces Nomad 15 gaming laptop: small in size, big on specs