But if water lingers underground for several days, subway rats may pop up aboveground, Leirs said.

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Aboveground is a gorgeously symmetrical crown of green, celery-like growth radiating from the central knob to about 12 inches.

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Aboveground testing of nuclear bombs in the 1950s and early 1960s created elevated levels of radioactive carbon that soon became incorporated into all living things.

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Aboveground, the neighborhood around Delancey Street is about to change dramatically.

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Though both companies are coy about bandwidth and compression, in brief trials both systems generally sounded good, even smack in the middle of a big aboveground parking structure.

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Mr. Prendergast said last month that the agency would evaluate whether it was possible to raise some sensitive equipment to new locations aboveground to protect against future floods.

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Traffic will flow through high-speed underground roadways and aboveground interchanges.

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Oklahoma state law also doesn't require schools to have fortified aboveground rooms, which can be built with reinforced concrete to withstand tornado winds, said Kevin Kloesel, director of the Oklahoma Climatological Survey, which offers statewide training in emergency management.

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