It was once thought that asteroids in the main belt occasionally collided with one another, sending fragments into orbital resonance bands where they could be affected by the gravity of Jupiter or Saturn.

ECONOMIST: Celestial mechanics: A rock in a hard place | The

Baste occasionally with the butter mixture and turn once near the end to crisp the skin.

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Occasionally it will be hundreds of millions and once in a blue moon billions.

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Once smitten, he purchased extravagantly, for pleasure, increasingly expertly, occasionally selling in order to finance further purchases.

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Lavender, once the head of the Board of Trade's Technology Committee, relies on a computer only occasionally--to endorse a trade, not to make one.

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Carter once requested that a video made by his son be removed from the site. (Denton, who likes to be perceived as unswayable, briefly de-listed the post from search engines.) Denton occasionally has drinks with Andersen, who is now a novelist and radio host, and once personally invited him to become a Gawker commenter under his own name.

NEWYORKER: Search and Destroy