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By combining a hurricane model and coupled ocean-atmosphere general circulation model to investigate the early Pliocene, Emanuel, Brierley and co-author Alexey Fedorov observed how vertical ocean mixing by hurricanes near the equator caused shallow parcels of water to heat up and later resurface in the eastern equatorial Pacific as part of the ocean wind-driven circulation. The researchers conclude from this pattern that frequent hurricanes in the central Pacific likely strengthened the warm pool in the eastern equatorial Pacific, which in turn increased hurricane frequency — an interaction described by Emanuel as a “two-way feedback process.”�The researchers believe that in addition to creating more hurricanes, the intense hurricane activity likely created a permanent El Nino like state in which very warm water in the eastern Pacific near the equator extended to higher latitudes. The El Nino weather pattern, which is caused when warm water replaces cold water in the Pacific, can impact the global climate by intermittently altering atmospheric circulation, temperature and precipitation patterns.The research suggests that Earth’s climate system may have at least two states — the one we currently live in that has relatively few tropical cyclones and relatively cold water, including in the eastern part of the Pacific, and the one during the Pliocene that featured warm sea surface temperatures, permanent El Nino conditions and high tropical cyclone activity.Although the paper does not suggest a direct link with current climate models, Fedorov said it is possible that future global warming could cause Earth to transition into a different equilibrium state that has more hurricanes and permanent El Nino conditions. “So far, there is no evidence in our simulations that this transition is going to occur at least in the next century. However, it’s still possible that the condition can occur in the future.”�Whether our future world is characterized by a mean state that is more El Nino-like remains one of the most important unanswered questions in climate dynamics, according to Matt Huber, a professor in Purdue University’s Department of Earth and Atmospheric Sciences. The Pliocene was a warmer time than now with high carbon dioxide levels. The present study found that hurricanes influenced by weakened atmospheric circulation — possibly related to high levels of carbon dioxide — contributed to very warm temperatures in the Pacific Ocean, which in turn led to more frequent and intense hurricanes. The research indicates that Earth’s climate may have multiple states based on this feedback cycle, meaning that the climate could change qualitatively in response to the effects of global warming.

No silver bullets. This is the simple premise of Diane Ravitch’s new book, “The Death and Life of the Great American School System,” which is being brought out this week by Basic Books. Written by one of our nation’s most respected scholars, it has been eagerly awaited. But it has also been, at least in some quarters, anticipated with a certain foreboding, because it was likely to debunk much of the conventional — and some not so conventional — wisdom surrounding education reform. Click Image to Enlarge

What of the once-great comprehensive high schools, institutions with history and in some cases a track record of success going back generations? As time moves on, it is fast becoming clear that the new small schools, many with inane themes (how about the School of Peace and Diversity?), can never substitute for a good neighborhood high school, which can become a center of communal life and pride. Ms. Ravitch’s report underscores the fact that the trick is to fix the neighborhood schools beset with problems, not destroy them.

It is not only the foundations that Ms. Ravitch blames for the current crisis: government has also failed in the attempt to reform the schools from above, lacking a clear perspective of how schools work on a day-to-day basis. Thus, the major federal initiative, No Child Left Behind, well intentioned as it may have been, ended up damaging the quality of education, not improving it. While the federal government declares schools as “failing” and prescribes sanctions for schools not meeting its goal of “annual yearly progress,” it is the states that are allowed to write and administer the tests. This has led to a culture of ever easier tests and more test preparation rather than real instruction. More ominously, it led to such scandals as the New York State Education Department lowering the “cut scores” that define the line between passing and failing. Ms. Ravitch suggests that the proper roles of the states and federal government have been reversed under NCLB. Maybe the standards for achievement should be set in Washington, which, after all, administers the National Assessment of Educational Progress , and the solutions found at the local level, using the accurate data provided by Washington. Instead of moving in a different direction from the failed NCLB model of the Bush Administration, the Obama administration has adopted and expanded on them.

Powell pointed out that Obama has kept in place most of the programs enacted by the Bush administration. "The Transportation Security Administration created by George Bush is still in action working in our airports," Powell told host Bob Schieffer. "They take care of me every day that I go to an airport." The Office of the Director of National Intelligence was also created under President Bush, "and it is still under President Obama, working hard," Powell continued. "Our counterterrorism authorities and forces are hard at work. Our law enforcement officials are hard at work. We have gone after the enemy in Afghanistan with 50,000 more troops, more predators are striking al-Qaida and Taliban leaders in Pakistan. We have continued the policies that President Bush put in place with respect to Iraq. And so I don't know where the claim comes that we are less safe."

Stack was upset that §1706 did precisely what it was designed to do: Deprive him of the chance to exploit independent contractor status to avoid paying taxes through non-filing or through the understatement of income, overstatement of deductions, and avoidance of income tax withholding. In spite of the overwhelming advantages attendant to employee status, Joe Stack desperately wanted to be treated as an independent contractor for one simple reason: It would have made his tax protesting easier.4 Footnotes: ¹  We have met many taxpayers who worked as independent contractors for years without so much as a peep of protest until they realized, ex post facto, that it might have better for them to have been treated as employees. In our experience, workers tend to be content with their independent contractor status until one of the following happens: They get fired or quit They get hurt on the job They get sued for something they did while on the job They need a bank loan (and employment verification)  ²  If Stack had been an independent contractor and was subsequently “fired” by his principal, my hunch is it would have taken him less time to file a claim for unemployment compensation than it takes Apolo Ohno to finish short track. ³  Indeed, §1706 was included in TRA ‘86 because the CBO had estimated that the government was losing up to 30% of taxes because independent contractors were either not reporting all of their income on their tax returns or were claiming fraudulent or questionable deductions against that income. 4   Like all tax protestors, Stack knew that once the IRS had collected his taxes through payroll withholding it would never give it back to him based on previously refuted tax protestor arguments. Consequently, his only chance of avoiding taxes was to control his own tax payments and then use his frivolous arguments to evade or at least defer paying taxes.

Trade's effect on military conflict is one of the most important issues in international relations. The last decade has seen research and debate into the role of trade intensify; Liberals argue that trade brings peace, neo-realists and neo-Marxists reason that trade brings conflict, and classical realists contend that trade has no impact. This debate is not just academic: some key U.S. policymakers (Senator McCain and former President Clinton for instance) believe that trade brings peace, a view that contributes to their support for free trade. Economists developed bilateral trade models in isolation from models of interstate conflict, which were the work of political scientists. These two types of models handle distance between nations differently. Bilateral trade takes its cue from Isaac Newton's formula for the gravitational attraction between two objects: the larger the objects' masses and the shorter the distance between them, the larger the attraction. So the larger the trade partners' economies and the closer they are to one another, the greater their trade. However, conflict models instead incorporate shared borders by land or close distance over water (contiguity) - stressing the role of border disputes in sparking interstate conflict. Distance is included in conflict equations based on the idea that an army gets weaker the farther it strays from its base, but what point in a nation to pick for the trade and conflict equation is unclear. Often theorists use the distance between capital cities, which is problematic: wars generally happen around borders where armies are often based, and capitals have historically changed without this altering the likelihood of war between the nation and its neighbours. The authors suggest that the trade data set plugged into trade and conflict equations is critical. This type of data often contains gaps - there are a number of reasons why data from a particular nation might be unavailable, inevitably leaving researchers to make assumptions. The majority of trade and conflict studies define conflict to include all types of militarised interstate disputes (MIDs). But Keshk, Reuveny, and Pollins question the results generated when different conflict definitions are chosen. For instance, a conflict such as a threat to use nuclear weapons would not cause fatalities, but may still have some impact on trade and vice versa. In fact, by altering the data treatment and assumptions in the equation, the authors generated a variety of results, which supported several different theoretical viewpoints. The authors suggest that future research should investigate questions of missing bilateral trade data, and attempt a more subtle use of the meaning of "military conflict". Researchers might also develop distance and contiguity measures at a more sophisticated level. "Any signal that trade brings peace remains weak and inconsistent, regardless of the way proximity is modelled in the conflict equation. The signal that conflict reduces trade, in contrast, is strong and consistent," say the authors. "Any study of the effect of trade on conflict that ignores the reverse fact is practically guaranteed to produce estimates that contain simultaneity bias." Studies of the relationship between international trade and military conflict can be traced back many centuries, particularly in the works of luminaries such as de Montesquieu, Immanuel Kant, John Hobson, Vladimir Lenin, Henry Morgenthau, Kenneth Waltz, Frederic List, and Albert Hirschman. This latest study emphasises that international politics are affecting trade between nation pairs, while it is far less obvious whether trade systematically affects politics. "To our colleagues from the liberal camp we would like to say that we still believe there are limited circumstances in which more trade may help lead countries to more peaceful resolutions of their differences, particularly if they are already at peace," the authors state. "However, it is past time for academics and policymakers to look beyond the naive claim that the cultivation of trade ties will always and everywhere produce a more peaceful world."

A Harris release on the February 16-21 telephone survey of 1,010 adults did not specify how financial regulation should be applied but said three-quarters of Americans believe Wall Street companies should pay bonuses only while in the black.Story continues below ↓advertisement | your ad heredap('&PG=NBCMSB&AP=1089','300','250');Harris said the U.S. public does see value in Wall Street itself: nearly 60 percent say the financial sector is an essential benefit to the United States.But a slightly larger majority disagrees that what is good for Wall Street is good for the country, while about two-thirds harbor strong negative views about the people who work there.By a margin of 66 percent to 29 percent, Americans agree that "most people on Wall Street would be willing to break the law if they believed they could make a lot of money and get away with it," pollsters found.Sixty-five percent say most successful people on Wall Street do not deserve the kind of money they make.

Parliamentarians need to recognize that copyright touches everyone and every technology in the digital age. It is no longer a question of inter-business regulation and deals. Getting copyright wrong has the potential to mess up our freedom of speech, prevent us from getting the benefits of new technologies, and damage society in other very profound ways. It is therefore deeply inappropriate for such fundamental proposals to have been introduced by both the government or the opposition parties at the behest of one side of the debate. That applies just as much to disconnection, which Mandelson introduced in the summer at the last minute under pressure again from the BPI and other rights holders.