The panel found little if any credible evidence supporting the teaching philosophy and practices that math educators have promoted in their ed-school courses and embedded in textbooks for almost two decades.

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The mathematics educators’ response to the panel’s report came as no surprise. The Montana Mathematics Enthusiast, a journal put out by an NCTM state affiliate, was the first to declare the party line in its July 2008 issue, which featured highly critical essays by five mathematics educators. Issue editor Greer declared in his overview that the panel’s report offered nothing useful, since it had “restricted” itself to scientific research and ignored the “rich reflections” of educators, who, in his judgment, had produced the “deepest work in the field.”

In a series of four experiments, Loran Nordgren from Northwestern University showed that people suffer from a "restraint bias", where they overestimate their ability to control their own impulses. Those who fall prey to this fallacy most strongly are more likely to dive into tempting situations. Smokers, for example, who are trying to quit, are more likely to put themselves in situations if they think they're invulnerable to temptation. As a result, they're more likely to relapse.

The restraint bias stems from the fact that we're generally bad at predicting the future and how we'd feel in circumstances that are different to our current ones.

Now, four years after that decision gave Susette Kelo's land to private developers for a project including a hotel and offices intended to enhance Pfizer Inc.'s nearby corporate facility, the pharmaceutical giant has announced it will close its research and development headquarters in New London, Connecticut.

The aftermath of Kelo is the latest example of the futility of using eminent domain as corporate welfare. While Ms. Kelo and her neighbors lost their homes, the city and the state spent some $78 million to bulldoze private property for high-end condos and other "desirable" elements. Instead, the wrecked and condemned neighborhood still stands vacant, without any of the touted tax benefits or job creation.

An Italian court has cut the sentence given to a convicted murderer by a year because he has genes linked to violent behaviour — the first time that behavioural genetics has affected a sentence passed by a European court. But researchers contacted by Nature have questioned whether the decision was based on sound science.

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For the new report, Pietro Pietrini, a molecular neuroscientist at Italy's University of Pisa, and Giuseppe Sartori, a cognitive neuroscientist at the University of Padova, conducted a series of tests and found abnormalities in brain-imaging scans and in five genes that have been linked to violent behaviour — including the gene encoding the neurotransmitter-metabolizing enzyme monoamine oxidase A (MAOA). A 2002 study led by Terrie Moffitt, a geneticist at the Institute of Psychiatry, King's College, London, had found low levels of MAOA expression to be associated with aggressiveness and criminal conduct of young boys raised in abusive environments.

Waiting on the results.

In early 2007, a 28-year-old Japanese woman gave birth to a girl. Thirty-six days later, the mother was hospitalized with vaginal bleeding, which became uncontrollable. Doctors diagnosed leukemia, and she soon died. The baby developed normally until age 11 months, when a huge tumor appeared in her cheek. A biopsy determined the cancer was not sarcoma--a cancer of certain connective tissues--but a leukemic tumor somehow trapped in the child's cheek.

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Finally, tests showed the child's cancer cells were almost all maternal cells, with no genetic material from the father.

Prestige is especially dangerous to the ambitious. If you want to make ambitious people waste their time on errands, the way to do it is to bait the hook with prestige. That's the recipe for getting people to give talks, write forewords, serve on committees, be department heads, and so on. It might be a good rule simply to avoid any prestigious task. If it didn't suck, they wouldn't have had to make it prestigious.

People remember things better, longer, if they are given very challenging tests on the material, tests at which they are bound to fail. In a series of experiments, they showed that if students make an unsuccessful attempt to retrieve information before receiving an answer, they remember the information better than in a control condition in which they simply study the information. Trying and failing to retrieve the answer is actually helpful to learning. It’s an idea that has obvious applications for education, but could be useful for anyone who is trying to learn new material of any kind.