The key distinction is that while fossil fuels release carbon that otherwise would have remained sequestered, biomass releases carbon that would have entered the atmosphere anyway, through decomposition.
Mr. Wu has been voting in Washington but has largely remained sequestered from the news media.
Ms. Black has remained largely sequestered from the public since taking over in January from Joel I. Klein, and at public functions she commonly hews to scripted remarks or takes limited questions.
The "Keeping Up With the Kardashians" star, 32, has remained somewhat sequestered at her mother's Hidden Hills mansion since Nori's birth, while her place with West is being renovated (and perhaps to make a slim-down splash when she debuts her post-baby body).
But the moment everyone had been waiting for was anticlimactic: Mr. Chávez remained sequestered, just as he had been for weeks.
Yet he did not talk to his co-workers or make friends with other Spaniards; he remained sequestered in his Muslim world.
At that time, the family remained sequestered at their home in an upscale expatriates' community in Beijing, and diplomats said they had sought consular assistance from the British Embassy in gaining the exit visas they needed to leave China.
Salinger himself remained sequestered from the world in New Hampshire.
There, Mr. Rumsfeld, Gen. Richard B. Myers, the vice chairman of the Joint Chiefs, and other top military and civilian aides remained sequestered through the day to discuss military options.
She remained sequestered in Southern California this week, half a world removed from the rest of the United States swim team, which traveled last weekend to Singapore, its final pre-Games base.
