Word: periodical
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...they're right, it could be pretty bad news, even for those who already worry about rising CO2. It's generally agreed that during the earlier warm period, known as the Miocene Climatic Optimum, which occurred 15 million years ago, the global temperature was high enough to make sea levels between 80 ft. and 130 ft. higher than they are today. According to the new study, CO2 levels in the atmosphere at that time hovered at from 390 to 430 parts per million (p.p.m.). Today's CO2 level: 387 p.p.m. and rising...
...while other scientists take the new result seriously, they're not quite ready to buy into it completely. "It's a really worthwhile and bold effort to understand a period we have a hard time explaining," says Ed Boyle, a professor of ocean geochemistry at MIT. "My cautious view is that this looks promising right now, but I've been studying chemical tracers in foraminifera for pretty much my whole career, and there are often unexpected twists and turns." It is, he says, "the kind of thing where they may turn out to be right, and we'll look back...
Claiborne said that the “Boston Miracle” of the 1990s, a period that saw large declines in violent crime, was a highlight of his years...
...China's past 60 years can be divided into roughly two halves. First came the period of ceaseless revolution, with all the widespread turmoil and suffering it perpetrated. Then the time of gradual reform, which has brought greater prosperity and freedom than China has ever known but which is still characterized by grave corruption and terrible injustice under a stern authoritarianism. Today China is many things, often contradictory: rich and poor, open and closed, liberated and oppressed, confident and insecure. But it decidedly isn't Marxist - or even Maoist. (See pictures of modern Shanghai...
Panetta was told about Qum during the White House transition period in January. "This was presented at that time as something nobody knew about, a secret facility," he told TIME in an exclusive interview. "It was built into a mountain; obviously that raised question marks." Panetta said that after he was confirmed as the agency's director, "we spent the next months trying to get better intel about what was going on there ... and conducting covert operations into that area." (See pictures of the world's worst nuclear disasters...