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Across the world, "population change is reversing secularism and shifting the center of gravity of entire societies in a conservative religious direction." The same will be true here in the United States, where religious families have more children than non-religious ones.

It's easy to underestimate the role that population change can have in social change, Kaufmann says, but it can have a huge role, especially when differences in values drive differences in fertility

martphone and the webcam have made it possible for all manner of sexual activity to be recorded and distributed for all the world to see free of charge. This is one way to explain why none of the people who read Ravi’s original tweet, none of the young women crowded around Wei’s computer to see what Clementi and his guest were up to, and none of the people who received Ravi’s invitation to view Clementi’s next liaison bestirred themselves to stay his hand. As Cicco testified, they “really didn’t think that it was that big of a deal.”

Research comparing the two methods has consistently found that students over all perform better in active-learning courses than in traditional lecture courses. However, women, minorities, and low-income and first-generation students benefit more, on average, than white males from more affluent, educated families.

research has demonstrated that we learn new material by anchoring it to knowledge we already possess

low-stakes quiz at the start of each meeting of their introductory psychology course. Compared with students who took the same course in a more traditional format, the quizzed students attended class more often and achieved higher test scores; the intervention also reduced by 50 percent the achievement gap between more affluent and less affluent students.

This is an important speech on a very important subject. But before I begin, I want to just speak briefly about Haiti, because during the last eight days, the people of Haiti and the people of the world have joined together to deal with a tragedy of staggering proportions. Our hemisphere has seen its share of hardship, but there are few precedents for the situation we’re facing in Port-au-Prince. Communication networks have played a critical role in our response. They were, of course, decimated and in many places totally destroyed. And in the hours after the quake, we worked with partners in the private sector; first, to set up the text “HAITI” campaign so that mobile phone users in the United States could donate to relief efforts via text messages. That initiative has been a showcase for the generosity of the American people, and thus far, it’s raised over $25 million for recovery efforts.

Information networks have also played a critical role on the ground. When I was with President Preval in Port-au-Prince on Saturday, one of his top priorities was to try to get communication up and going. The government couldn’t talk to each other, what was left of it, and NGOs, our civilian leadership, our military leadership were severely impacted. The technology community has set up interactive maps to help us identify needs and target resources. And on Monday, a seven-year-old girl and two women were pulled from the rubble of a collapsed supermarket by an American search-and-rescue team after they sent a text message calling for help. Now, these examples are manifestations of a much broader phenomenon.

The spread of information networks is forming a new nervous system for our planet. When something happens in Haiti or Hunan, the rest of us learn about it in real time – from real people. And we can respond in real time as well. Americans eager to help in the aftermath of a disaster and the girl trapped in the supermarket are connected in ways that were not even imagined a year ago, even a generation ago. That same principle applies to almost all of humanity today. As we sit here, any of you – or maybe more likely, any of our children – can take out the tools that many carry every day and transmit this discussion to billions across the world.

In the survey, “The American Freshman: National Norms Fall 2010,” involving more than 200,000 incoming full-time students at four-year colleges, the percentage of students rating themselves as “below average” in emotional health rose. Meanwhile, the percentage of students who said their emotional health was above average fell to 52 percent. It was 64 percent in 1985.

“More students are arriving on campus with problems, needing support, and today’s economic factors are putting a lot of extra stress on college students, as they look at their loans and wonder if there will be a career waiting for them on the other side.”

“Students know their generation is likely to be less successful than their parents’, so they feel more pressure to succeed than in the past,” said Jason Ebbeling, director of residential education at Southern Oregon University. “These days, students worry that even with a college degree they won’t find a job that pays more than minimum wage, so even at 15 or 16 they’re thinking they’ll need to get into an M.B.A. program or Ph.D. program.”