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The ability of NASA's Mars Reconnaissance Orbiter to continue charting the locations of these hidden glaciers and ice-filled valleys -- first confirmed by radar two years ago -- adds clues about how these deposits may have been left as remnants when regional ice sheets retreated. The subsurface ice deposits extend for hundreds of kilometers, or miles, in the rugged region called Deuteronilus Mensae, about halfway from the equator to the Martian north pole. Jeffrey Plaut of NASA's Jet Propulsion Laboratory, Pasadena, Calif., and colleagues prepared a map of the region's confirmed ice for presentation at this week's 41st Lunar and Planetary Science Conference near Houston. The Shallow Radar instrument on the orbiter has obtained more than 250 observations of the study area, which is about the size of California. "We have mapped the whole area with a high density of coverage," Plaut said. "These are not isolated features. In this area, the radar is detecting thick subsurface ice in many locations." The common locations are around the bases of mesas and scarps, and confined within valleys or craters. Plaut said, "The hypothesis is the whole area was covered with an ice sheet during a different climate period, and when the climate dried out, these deposits remained only where they had been covered by a layer of debris protecting the ice from the atmosphere."

The Vilks controversy arose in 2007, when his entry in an arts project was published by the newspaper. It pictured a dog with the head of a bearded man in a turban. Several Muslim countries protested against the picture. At the time, Swedish officials expressed regret at any hurt caused to Muslims' feelings, but said the government could not prevent the publication of such drawings because of media freedom rules. The case came about a year and a half after a series of depictions of Muhammad in Denmark's Jyllands-Posten paper caused an uproar in early 2006. Those cartoons sparked protests from Muslims around the world. Dozens of people were killed in riots. Muslims regard any image of the Prophet Muhammad as blasphemy. In January, one of the cartoonists whose drawing appeared in Jyllands-Posten, the Dane Kurt Westergaard, was targeted in his own home, allegedly by a Somali radical Muslim with an axe. Mr Westergaard, who escaped unharmed, had depicted the Prophet Muhammad with a bomb in his turban. Mr Vilks told The Associated Press news agency that the telephone threats in January had come from "a Swedish-speaking Somali. He reminded me about what had happened to Westergaard and threatened with a follow-up and that 'now it's your turn'."

Why haven't the President and Senate Democrats pulled the reconciliation trigger before now? I haven't spoken directly with the President or with Harry Reid but I've spent the last several weeks sounding out contacts on the Hill and in the White House to find an answer. Here are the theories. None of them justifies waiting any longer. Reconciliation is too extreme a measure to use on a piece of legislation so important. I hear this a lot but it's bunk. George W. Bush used reconciliation to enact his giant tax cut bill in 2003 (he garnered only 50 votes for it in the Senate, forcing Vice President Cheney to cast the deciding vote). Six years before that, Bill Clinton rounded up 51 votes to enact the Children's Health Insurance Program (CHIP), the largest expansion of taxpayer-funded health insurance coverage for children in the U.S. since Medicaid began in the 1960s. Through reconciliation, we also got Medicare Advantage. Also through reconciliation came the COBRA act, which gives Americans a bit of healthcare protection after they lose a job ("reconciliaton is the "R" in the COBRA acronym.) These were all big, important pieces of legislation, and all were enacted by 51 votes in the Senate. Use of reconciliation would infuriate Senate Republicans. It may. So what? They haven't given Obama a single vote on any major issue since he first began wining and dining them at the White House. In fact, Senate Minority Leader Mitch McConnell and company have been doing everything in their power to undermine the President. They're using the same playbook Republicans used in the first two years of the Clinton administration, hoping to discredit the President and score large victories in the midterm elections by burying his biggest legislative initiative. Indeed, Obama could credibly argue that Senate Republicans have altered the rules of the Senate by demanding 60 votes on almost every initiative - a far more extensive use of the filibuster than at any time in modern history - so it's only right that he, the President, now resort to reconciliation. Obama needs Republican votes on military policy so he doesn't dare antagonize them on health care. I hear this from some quarters but I don't buy it. While it's true that Dems are skeptical of Obama's escalation of the war in Afghanistan and that Republicans are his major backers, it seems doubtful R's would withdraw their support if the President forced their hand on health care. Foreign policy is the one area where Republicans have offered a halfway consistent (and always bellicose) voice, and Dick Cheney et al would excoriate them if they failed to back a strong military presence in the Middle East. This is truer now than ever. Reid fears he can't even get 51 votes in the Senate now, after Scott Brown's win. Reid counts noses better than I do, but if Senate Democrats can't come up with even 51 votes for the health care reforms they enacted weeks ago they give new definition to the term "spineless." Besides, if this is the case, Obama ought to be banging Senate heads together. A president has huge bargaining leverage because he presides over an almost infinite list of future deals. Lyndon Johnson wasn't afraid to use his power to the fullest to get Medicare enacted. If Obama can't get 51 Senate votes out of 58 or 59 Dems and Independents, he definitely won't be able to get 51 Senate votes after November. Inevitably, the Senate will lose some Democrats. Now's his last opportunity. House and Senate Democrats are telling Obama they don't want to take another vote on health care or even enact it before November's midterms because they're afraid it will jeopardize their chances of being reelected and may threaten their control over the House and Senate. I hear this repeatedly but if it's true Republicans have done a far better job scaring Americans about health care reform than any pollster has been able to uncover. Most polls still show a majority of Americans still in favor of the basic tenets of reform - expanded coverage, regulations barring insurers from refusing coverage because of someone's preexisting conditions and preventing insurers from kicking someone off the rolls because they get sick, requirements that employers provide coverage or pay into a common pool, and so on. And now that many private insurers are hiking up premiums, co-pays, and deductibles, the public is even readier to embrace reform.

Statistical validation of results, as Shaffer described it, simply involves testing the null hypothesis: that the pattern you detect in your data occurs at random. If you can reject the null hypothesis—and science and medicine have settled on rejecting it when there's only a five percent or less chance that it occurred at random—then you accept that your actual finding is significant. The problem now is that we're rapidly expanding our ability to do tests. Various speakers pointed to data sources as diverse as gene expression chips and the Sloan Digital Sky Survey, which provide tens of thousands of individual data points to analyze. At the same time, the growth of computing power has meant that we can ask many questions of these large data sets at once, and each one of these tests increases the prospects than an error will occur in a study; as Shaffer put it, "every decision increases your error prospects." She pointed out that dividing data into subgroups, which can often identify susceptible subpopulations, is also a decision, and increases the chances of a spurious error. Smaller populations are also more prone to random associations. In the end, Young noted, by the time you reach 61 tests, there's a 95 percent chance that you'll get a significant result at random. And, let's face it—researchers want to see a significant result, so there's a strong, unintentional bias towards trying different tests until something pops out. Young went on to describe a study, published in JAMA, that was a multiple testing train wreck: exposures to 275 chemicals were considered, 32 health outcomes were tracked, and 10 demographic variables were used as controls. That was about 8,800 different tests, and as many as 9 million ways of looking at the data once the demographics were considered.

Today, he is emerging as one of the nation’s archreformers, pushing to impose some of the most stringent new financial regulations in history. And as the head of the Commodity Futures Trading Commission, the leading contender to oversee the complex derivatives contracts that played a central role in the financial crisis and, in turn, the Great Recession, he is in a position to influence the outcome. It may seem an unlikely conversion, but it is one that has won the approval of Brooksley E. Born, of all people, a former outspoken head of the commission. She sounded alarms more than a decade ago about the dangers hiding in the poorly understood derivatives market and was silenced by the same Washington power brokers that counted Mr. Gensler as a member. Mr. Gensler opposed Ms. Born, according to people who worked at the commission in the 1990s, and in 2000 played a significant role in shepherding through Congress deregulation measures that led to explosive growth of the over-the-counter derivatives market. That was then. These days, Ms. Born is convinced of Mr. Gensler’s reformist zeal, as he takes on Wall Street in what is becoming one of the fiercest battles over regulation in the postcrisis era. “I think he is doing very well,” she said in an interview. “He certainly seems to be committed to robust oversight of derivatives and limiting excessive speculation and leverage.” The proposals championed by Mr. Gensler, if adopted by Congress, would substantially alter what is now a largely unregulated market in over-the-counter derivatives, financial instruments used by companies and investors to protect themselves and bet on moves in variables, like interest rates or currencies, and to speculate. The proposals include forcing the big banks that sell derivatives to conduct their trades in the open on public exchanges and clear them through central clearinghouses, so that any investor can see the prices that dealers charge their customers. Today, those transactions are bilateral and private.