Ever since their inception and hasty popularity rise, Second Life and its virtual cohorts have been a fascinating fishbowl into human nature. With their near-limitless possibilities for meeting, dating, battling, selling to, and influencing strangers, these cyber-worlds are perfect for studying the ways we behave and interact—both the beautiful and the ugly. And there’s been plenty of the latter to go around, from rape to infidelity to theft—in other words, all the same cruelty, discourtesy, and immorality that goes on in real life, only in a smaller, more publicly track-able format.

As such, it should be no surprise that the prejudices that play out in regular society—such as, oh, say, racism—also manifest in virtual worlds. In a new paper published online in Social Influence, Northwestern University professor Wendi Gardner and grad student Paul Eastwick found that avatars with darker skin in the virtual world There.com (a close cousin to Second Life) were less likely to have a basic request granted by another avatar.

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All in all, women are doing pretty well in science. Surveys from the National Science Foundation show that the percentage of women getting science and engineering B.A.s has gone from from 39 percent in 1984-85 to 51 percent in 2004-5 (though the number of them actually stay in the profession is still dwindling). In fact, only one field can truly call itself still entrenched in male domination: computer science. The stark gender divide was summed up beautifully in last week’s New York Times:

Ellen Spertus, a graduate student at M.I.T., wondered why the computer camp she had attended as a girl had a boy-girl ratio of six to one. And why were only 20 percent of computer science undergraduates at M.I.T. female? She published a 124-page paper, “Why Are There So Few Female Computer Scientists?”, that catalogued different cultural biases that discouraged girls and women from pursuing a career in the field. The year was 1991.

Computer science has changed considerably since then. Now, there are even fewer women entering the field.

And the numbers are just as startling: “In 2001-2, only 28 percent of all undergraduate degrees in computer science went to women. By 2004-5, the number had declined to only 22 percent.” And this year? “Many computer science departments report that women now make up less than 10 percent of the newest undergraduates.”

So why is this happening?

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We know that adults consciously and subconsciously “expect” their leaders to be male and Caucasian. But now it looks like the white male-ness of our past leaders is alive and well in the minds of kids as young as five.

In 2006, research teams at the University of Texas at Austin and the University of Kansas quizzed 205 children ages five to 10 on “their knowledge, attitudes and beliefs” about the similarities among the U.S. presidents we’ve had so far. The three studies asked kids from “diverse” racial and ethnic backgrounds about why there had never been an African American, Hispanic, or female president. Here’s a summary of the results:

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This morning, the three winners of the 2008 Nobel Prize for physiology or medicine were announced. One of the honored three is French scientist Françoise Barre-Sinoussi, a member of the team who first discovered HIV and its role in causing AIDS. Her co-discoverer, and fellow Nobel winner, is Luc Montagnier. Besides the fact that they were the first researchers to isolate the virus, the biggest thing there is to know about them is that one is a man, and the other is a woman.

Unfortunately for Françoise—and for the reputation of the science-covering media—the Nobel committee apparently failed to include a picture of her in the press release, spelling out her female-ness for all to see. What happened next, in a display of basic fact-checking—or even just minor Googling—that would make Jayson Blair proud, was the following CNN report:

Two Frenchmen and a German won the 2008 Nobel Prize in medicine for their discoveries of viruses that cause HIV and cervical cancer, the organization’s Web site said Monday.

Francoise Barre-Sinoussi and Luc Montagnier of France were honored “for their discovery of human immunodeficiency virus.” The pair are recognized as the discoverers in 1983 of the virus that can expose people to AIDS.

And to pour a little sodium chloride in the wound, Scientific American’s Steve Mirsky described the duo as “the two Frenchmen” in a podcast that’s now posted on their Web site. The transcript of the podcast has since been changed—without any note of the correction—to “the two French scientists.” Apparently Françoise was deemed female enough to be identified as such—Nobel Prize and all.