Word: months
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...black carbon has a relatively brief life span. It remains just a few weeks in the air before it falls to earth. That's key, because if the world could reduce black carbon emissions soon, it could help blunt warming almost instantly. "You can wait a week or a month and the totals in the atmosphere can be significantly different," says Eric Wilcox, an atmospheric scientist with NASA. Meanwhile, if we were to vastly reduce new CO2 emissions immediately, the billions of tons that already exist in the atmosphere would keep warming the planet for decades...
...found water," said Anthony Colaprete, the principal investigator for NASA's Lunar Crater Observation and Sensing Satellite (LCROSS), a mission that culminated in a spectacular crash on the surface of the moon about a month ago. (See a guide to the 40th anniversary of the moon landing...
...time, viewers from Earth were disappointed. They had been told - incorrectly, as it turned out - that they would be able see the impact through large amateur telescopes. Reporters were frustrated because, despite the drama, no actual information was available right away. It took a month of what Colaprete calls 28-hour days to extract the major news that there is, in fact, water on the moon...
...citations last night, city police might not be so accommodating. Yet students who chose to return to future sleep-outs planned in Boston will have to do so knowing that Harvard’s standard protocol stipulates that any student who is arrested is subject to a six-month mandatory leave and that the university has declined to state whether it would apply the same standard to those arrested while sleeping...
...such a mistake that I would use the power I have as a single Senator to stop a final vote." Just days before that, he told ABC News he intended to campaign for both Republican and Democratic candidates in next year's midterm elections. And late last month, in a rare oversight hearing of the Obama Administration, he examined the legality of the President's so-called czars - a favorite bone of contention of Fox News' Glenn Beck and talk radio's Rush Limbaugh.(See pictures of the Fort Hood memorial service...