We were starting to feel very bad for him and his family, when we noticed the TV and other high-tech gadgets. Why had he bought all these things if he felt the family did not have enough to eat? He laughed, and said, "Oh, but television is more important than food!"

For many in the West, poverty is almost synonymous with hunger. Indeed, the announcement by the United Nations Food and Agriculture Organization in 2009 that more than 1 billion people are suffering from hunger grabbed headlines in a way that any number of World Bank estimates of how many poor people live on less than a dollar a day never did. COMMENTS (7) SHARE: Twitter   Reddit   Buzz   More... But is it really true? Are there really more than a billion people going to bed hungry each night?

unfortunately, this is not always the world as the experts view it. All too many of them still promote sweeping, ideological solutions to problems that defy one-size-fits-all answers, arguing over foreign aid, for example, while the facts on the ground bear little resemblance to the fierce policy battles they wage.

I FIRST MET BJORN LOMBORG IN 2001 upon the publication of his Cambridge University Press book, The Skeptical Environmentalist, which I found to be a refreshing perspective on what had been the doom-and-gloom, end-of-the-world scenarios that I had been hearing since I was an undergraduate in the early 1970s. Back then we were told that overpopulation would lead to worldwide hunger and starvation, that there would be massive oil depletion, precious mineral exhaustion, and rainforest extinction by the 1990s. These predictions failed utterly. I felt I had been lied to for decades by the environmentalist movement that seemed to me to be little more than a political movement that raised money by raising fears.

Lomborg’s publicist thought that I might be interested in hosting him for the Skeptics Society’s public science lecture series at the California Institute of Technology that I organize and host. I was, but given the highly debatable nature of many of Lomborg’s claims I only agreed to host him if it could be a debate. Lomborg agreed at once to debate anyone, and this is where the trouble began. I could not find anyone to debate Lomborg. I contacted all of the top environmental organizations, and to a one they all refused to participate.

“There is no debate,” one told me. “We don’t want to dignify that book,” said another. I even called Paul Ehrlich, the author of the wildly popular bestselling book The Population Bomb — another apocalyptic prognostication that served as something of a catalyst in the 1970s for delimiting population growth — but he turned me down flat, warning me in no uncertain language that my reputation within the scientific community would be irreparably harmed if I went through with it.

what is climate change? From a scientific point of view, it is simply a statistical change in atmospheric variables (temperature, precipitation, humidity etc). It has been occurring ever since the Earth came into existence, far before humans even set foot on the planet: our climate has been fluctuating between warm periods and ice ages, with further variations within. In fact, we are living in a warm interglacial period in the middle of an ice age.

Global warming has often been portrayed in apocalyptic tones, whether from the mouth of the media or environmental groups: the daily news tell of natural disasters happening at a frightening pace, of crop failures due to strange weather, of mass extinctions and coral die-outs. When the devastating tsunami struck Southeast Asia years ago, some said it was the wrath of God against human mistreatment of the environment; when hurricane Katrina dealt out a catastrophe, others said it was because of (America’s) failure to deal with climate change. Science gives the figures and trends, and people take these to extremes.

One immediate problem with blaming climate change for every weather-related disaster or phenomenon is that it reduces humans’ responsibility of mitigating or preventing it. If natural disasters are already, as their name suggests, natural, adding the tag ‘global warming’ or ‘climate change’ emphasizes the dominance of natural forces, and our inability to do anything about it. Surely, humans cannot undo climate change? Even at Cancun, amid the carbon cuts that have been promised, questions are being brought up on whether they are sufficient to reverse our actions and ‘save’ the planet.  Yet the talk about this remote, omnipotent force known as climate change obscures the fact that, we can, and have always been, thinking of ways to reduce the impact of natural hazards. Forecasting, building better infrastructure and coordinating more efficient responses – all these are far more desirable to wading in woe. For example, we will do better at preventing floods in Singapore at tackling the problems rather than singing in praise of God.

in the last several months, one name turned up, with uncanny regularity, in the No. 1 spot for each and every term: J. C. Penney. The company bested millions of sites — and not just in searches for dresses, bedding and area rugs. For months, it was consistently at or near the top in searches for “skinny jeans,” “home decor,” “comforter sets,” “furniture” and dozens of other words and phrases, from the blandly generic (“tablecloths”) to the strangely specific (“grommet top curtains”).

J. C. Penney even beat out the sites of manufacturers in searches for the products of those manufacturers. Type in “Samsonite carry on luggage,” for instance, and Penney for months was first on the list, ahead of Samsonite.com.

the digital age’s most mundane act, the Google search, often represents layer upon layer of intrigue. And the intrigue starts in the sprawling, subterranean world of “black hat” optimization, the dark art of raising the profile of a Web site with methods that Google considers tantamount to cheating.

The cost of a college education has risen, in real dollars, by 250 to 300 percent over the past three decades, far above the rate of inflation. Elite private colleges can cost more than $200,000 over four years. Total student-loan debt, at nearly $830 billion, recently surpassed total national credit card debt. Meanwhile, university presidents, who can make upward of $1 million annually, gravely intone that the $50,000 price tag doesn’t even cover the full cost of a year’s education.

Then your daughter reports that her history prof is a part-time adjunct, who might be making $1,500 for a semester’s work. There’s something wrong with this picture.

The higher-ed jeremiads of the last generation came mainly from the right. But this time, it’s the tenured radicals — or at least the tenured liberals — who are leading the charge. Hacker is a longtime contributor to The New York Review of Books and the author of the acclaimed study “Two Nations: Black and White, Separate, Hostile, Unequal,”

A button called "See Friendship" aggregates onto a single page all of the information that two friends share: photos both people have been tagged in, events they have attended or are planning to attend, comments they have exchanged, etc. To see this stuff, you need only be "friends" with one of the people. So let's say I've turned down an ex-boyfriend's request for friendship; he can still peruse my pictures or trace my whereabouts by viewing my interactions with our mutual pals.

The "See Friendship" feature was launched by Facebook developer Wayne Kao, who credited his inspiration to the joy of browsing through friends' photos. "A similarly magical experience was possible if all of the photos and posts between two friends were brought together," he wrote on the Facebook blog. "You may even see that moment when your favorite couple met at a party you all attended."

Barry Wellman, a University of Toronto professor who studies social networks and real-life relationships, thinks Facebook developers don't understand the fundamental difference between life online and offline. "We all live in segmented, diversified worlds. We might be juggling girlfriends, jobs or different groups of friends," he says. "But [Facebook thinks] we're in one integrated community."

Even before I started writing Evolution: How We and All Living Things Came to Be I knew that it would very briefly mention religion, make a mild assertion that religious questions are out of scope for science, and move on. I knew this was likely to provoke blow-back from some in the atheist community, and I knew mentioning that blow-back in my recent post “The Standard Pablum — Science and Atheism” would generate more.

Still, I was surprised by the quantity of the responses to the blog post (208 comments as of this moment, many of them substantial letters), and also by the fierceness of some of those responses. For example, according to one poster, “you not only pandered, you lied. And even if you weren’t lying, you lied.” (Several took up this “lying” theme.) Another, disappointed that my children’s book does not tell a general youth audience to look to “secular humanism for guidance,” declared  that “I’d have to tear out that page if I bought the book.”

I don’t mean to suggest that there are not points of legitimate disagreement in the mix — there are, many of them stated powerfully. There are also statements of support, vigorous debate, and (for me at least) a good deal of food for thought. I invite anyone to browse the thread, although I’d urge you to skim some of it. (The internet is after all a hyperbole-generating machine.)

Measuring and assessing academic performance is now a fact of scientific life.

Yet current systems of measurement are inadequate. Widely used metrics, from the newly-fashionable Hirsch index to the 50-year-old citation index, are of limited use1

Existing metrics do not capture the full range of activities that support and transmit scientific ideas, which can be as varied as mentoring, blogging or creating industrial prototypes.

but News Feed only displays a subset of the stories generated by your friends — if it displayed everything, there’s a good chance you’d be overwhelmed. Developers are always trying to make sure their sites and apps are publishing stories that make the cut, which has led to the concept of “News Feed Optimization”, and their success is dictated by EdgeRank.

At a high level, the EdgeRank formula is fairly straightforward. But first, some definitions: every item that shows up in your News Feed is considered an Object. If you have an Object in the News Feed (say, a status update), whenever another user interacts with that Object they’re creating what Facebook calls an Edge, which includes actions like tags and comments. Each Edge has three components important to Facebook’s algorithm: First, there’s an affinity score between the viewing user and the item’s creator — if you send your friend a lot of Facebook messages and check their profile often, then you’ll have a higher affinity score for that user than you would, say, an old acquaintance you haven’t spoken to in years. Second, there’s a weight given to each type of Edge. A comment probably has more importance than a Like, for example. And finally there’s the most obvious factor — time. The older an Edge is, the less important it becomes.

Multiply these factors for each Edge then add the Edge scores up and you have an Object’s EdgeRank. And the higher that is, the more likely your Object is to appear in the user’s feed. It’s worth pointing out that the act of creating an Object is also considered an Edge, which is what allows Objects to show up in your friends’ feeds before anyone has interacted with them.

The question that the audience member asked — and one that we tried to touch on a bit in the panel itself — was who has access to this raw data. Twitter doesn’t comment on who has full access to its firehose, but to Weil’s credit he was at least forthcoming with some of the names, including stalwarts like Microsoft, Google and Yahoo — plus a number of smaller companies.

In the case of Twitter, the company offers free access to its API for developers. The API can provide access and insight into information about tweets, replies and keyword searches, but as developers who work with Twitter — or any large scale social network — know, that data isn’t always 100% reliable. Unreliable data is a problem when talking about measurements and analytics, where the data is helping to influence decisions related to social media marketing strategies and allocations of resources.

One of the companies that has access to Twitter’s data firehose is Gnip. As we discussed in November, Twitter has entered into a partnership with Gnip that allows the social data provider to resell access to the Twitter firehose.This is great on one level, because it means that businesses and services can access the data. The problem, as noted by panelist Raj Kadam, the CEO of Viralheat, is that Gnip’s access can be prohibitively expensive.

[T]he original cost [estimate] was 1.5 billion with completion targeted in 1965. The "actual" historical events went something like this. The NASA cost estimating gurus in 1961 projected an amount close to $7 Billion to do the entire program.33 34 This figure was apparently padded to $10-$12 Billion by management prior to giving that estimate to James Webb, the NASA Administrator. Mr. Webb (within hours of receiving the $10-$12 Billion figure) placed an "administrator's discount" on NASA’s ability to predict costs with due precision and by the stroke of his own pen, changed the estimate to $20 billion and submitted it to Vice President Linden B. Johnson. In the words of Robert Seamans Jr., (the Associate Administrator at the time) "We were aghast!"35 This cavalier beginning describes how Apollo's original fiscal requirements arrived at the steps of the Capitol and was subsequently blessed by Congress. Ironically, the $20 billion amount submitted by Mr. Webb to the Vice president appeared to be a completely arbitrary and highly irregular move. In anyone's book it was a radical cost estimating maneuver to be sure. But in the end, Mr. Webb's innate business sense and the courage to follow what that sense told him validated his action. It turned out to be a leadership demonstration of profound foresight. In the end the "real cost" of Apollo ultimately surpassed Mr. Webb's $20 billion estimate with a price tag of $25.4 billion as was reported to congress in 1973. The final program cost varies depending on what we include or exclude in the calculations,36 37 38 but in all instances exceeds $20 billion.

There is something almost religious about Kurzweil’s scientism, an observation he himself makes in the film, noting the similarities between his goals and that of the world’s religions: “the idea of a profound transformation in the future, eternal life, bringing back the dead—but the fact that we’re applying technology to achieve the goals that have been talked about in all human philosophies is not accidental because it does reflect the goal of humanity.” Although the film never discloses Kurzweil’s religious beliefs (he was raised by Jewish parents as a Unitarian Universalist), in a (presumably) unintentionally humorous moment that ends the film Kurzweil reflects on the God question and answers it himself: “Does God exist? I would say, ‘Not yet.’”

Transcendent Man is Barry Ptolemy’s beautifully crafted and artfully edited documentary film about Kurzweil and his quest to save humanity.

Transcendent Man pulls viewers in through Kurzweil’s visage of a future in which we merge with our machines and vastly extend our longevity and intelligence to the point where even death will be defeated. This point is what Kurzweil calls the “singularity” (inspired by the physics term denoting the infinitely dense point at the center of a black hole), and he arrives at the 2029 date by extrapolating curves based on what he calls the “law of accelerating returns.” This is “Moore’s Law” (the doubling of computing power every year) on steroids, applied to every conceivable area of science, technology and economics.