Nicholas Negroponte, chairman and founder of the Massachusetts Institute of Technology Media Labs, has been outlining designs for a sub-$100 PC.

The laptop will be tough and foldable in different ways, with a hand crank for when there is no power supply.

Professor Negroponte came up with the idea for a cheap computer for all after visiting a Cambodian village.

His non-profit One Laptop Per Child group plans to have up to 15 million machines in production within a year.

A prototype of the machine should be ready in November at the World Summit on the Information Society (WSIS) in Tunisia.

Children in Brazil, China, Egypt, Thailand, and South Africa will be among the first to get the under-$100 (£57) computer, said Professor Negroponte at the Emerging Technologies conference at MIT.

The following year, Massachusetts governor Mitt Romney plans to start buying them for all 500,000 middle and high school pupils in the state.

Professor Negroponte predicts there could be 100 million to 150 million shipped every year by 2007.

Cooperation Makes Humans Unique, But Study Finds Most Are Reluctant Cooperators

Despite the fact that humans sometimes fight fiercely among themselves, one of our most distinctive human traits is our willingness to cooperate with others. Why we are like that is one of the really big questions confronting evolutionary psychologists.

"The fact that people cooperate is quite mysterious," says Robert Kurzban, an assistant professor of psychology at the University of Pennsylvania. "People are constantly talking about how organisms are competing, but one thing that humans do that's distinctive is they cooperate in groups."

Other animals, from ants to wolves, also cooperate to a degree, but not as extensively as humans. As evolutionary psychologists, Kurzban and Daniel Houser of George Mason University are trying to figure out why.

Google, the operator of the world's most popular Internet search service, plans to announce an agreement today with some of the nation's leading research libraries and Oxford University to begin converting their holdings into digital files that would be freely searchable over the Web.

It may be only a step on a long road toward the long-predicted global virtual library. But the collaboration of Google and research institutions that also include Harvard, the University of Michigan, Stanford and the New York Public Library is a major stride in an ambitious Internet effort by various parties. The goal is to expand the Web beyond its current valuable, if eclectic, body of material and create a digital card catalog and searchable library for the world's books, scholarly papers and special collections.

These ideas fed into our work on indirect reciprocity, a concept that was first introduced by Robert Trivers in a famous paper in the 1970s. I recall that he mentioned this idea obliquely when he wrote about something he called "general altruism". Here you give something back not to the person to whom you owe something, but to somebody else in society. He pointed out that this also works with regard to cooperation at a high level. Trivers didn't go into details, because at the time it was not really at the center of his thinking. He was mostly interested in animal behavior, and so far indirect reciprocity has not been proven to exist in animal behavior. It might exist in some cases, but ethologists are still debating the pros and cons.

In human societies, however, indirect reciprocity has a very striking effect. There is a famous anecdote about the American baseball player Yogi Berra, who said something to the effect of, "I make a point of going to other people's funerals because otherwise they won't come to mine." This is not as nonsensical as it seems. If a colleague of the university, for instance, goes faithfully to every faculty member's funeral, then the faculty will turn out strongly at his. Others reciprocate. It works. We think instinctively in terms of direct reciprocation — when I do something for you, you do something for me — but the same principle can apply in situations of indirect reciprocity. I do something for you and somebody else helps me in return.

Co-operation has brought the human race a long way in a staggeringly short time

“Our everyday life is much stranger than we imagine, and rests on fragile foundations.” This is the intriguing first sentence of a very unusual new book about economics, and much else besides: “The Company of Strangers”, by Paul Seabright, a professor of economics at the University of Toulouse. (The book is published by Princeton University Press.) Why is everyday life so strange? Because, explains Mr Seabright, it is so much at odds with what would have seemed, as recently as 10,000 years ago, our evolutionary destiny. It was only then that “one of the most aggressive and elusive bandit species in the entire animal kingdom” decided to settle down. In no more than the blink of an eye, in evolutionary time, these suspicious and untrusting creatures, these “shy, murderous apes”, developed co-operative networks of staggering scope and complexity—networks that rely on trust among strangers. When you come to think about it, it was an extraordinarily improbable outcome.

The tech guru sees a "new economic system" in the unconscious cooperation embodied by Google links and Amazon lists.

Howard Rheingold is on the hunt again. With his last book, Smart Mobs: The Next Social Revolution, in 2001, the longtime observer of technology trends made a persuasive case that pervasive mobile communications, combined with always-on Internet connections, will produce new kinds of ad-hoc social groups. Now, he's starting to take the leap beyond smart mobs, trying to weave some threads out of such seemingly disparate developments as Web logs, open-source software development, and Google.

At the same time, Rheingold is worried that established companies could quash such nascent innovations as file-sharing -- and potentially put the U.S. at risk of falling behind the rest of the world. He recently spoke with Robert D. Hof, BusinessWeek's Silicon Valley bureau chief. Here are excerpts from their conversation:

Q: Where do you see the social revolution you've been talking about going next?

A: It's too early to say. The question is: What does it point toward? Some kind of collective action...in which the individuals aren't consciously cooperating. A market is a great example as a mechanism for determining price based on demand. People aren't saying, "I'm contributing to the market," they say they're just selling something. But it adds up.

It is wartime. You and your family are hiding in the basement. You can hear the enemy soldiers approaching. To your horror, the baby begins to fuss and cry. If you cover her mouth, she will suffocate and die. If you do not, the soldiers will find you and you'll all be killed. What do you do?

And what does your brain do as you decide?

Tragedy of the Commons

There are two kinds of selfishness: the kind that says, 'I must do what will make me happy,' and the kind that says, 'You must do what will make me happy.' The first is good, the second is bad."
- Kenton E. Sinner

The Salvation Army, a charity best known for using bells and kettles to collect spare nickels and dimes at Christmastime, said yesterday that Joan B. Kroc, the wife of the builder of the McDonald's restaurant chain, had left it roughly $1.5 billion in her will when she died last fall.

The top 400 American earners in 2000 provided nearly 7 percent of all the charitable gifts reported on income tax returns for that year, well in excess of their roughly 1 percent share of overall income, according to data released yesterday by the NewTithing Group, a charity that tracks giving.

What prompted Good King Wenceslas to look out on that feast of Stephen? And why should he have cared that the poor man was gathering winter fuel? Modern evolutionary theory agrees with market economics that we are inherently selfish and unlikely to give if we don't expect to receive. But new research challenges that model.

The origin of altruism goes to the heart of the gene/culture debate that was launched in 1975 with the publication of E. O. Wilson's Sociobiology and, a year later, Richard Dawkins's The Selfish Gene. Sociobiology claims that human nature - and by extension human society - is rooted in our genes: we are, according to Dawkins, "lumbering robots" created "body and mind" by selfish genes.

This is anathema to social scientists and biologists such as Steven Rose, who see human nature as far more malleable.

Sir Arthur C Clarke is acknowledged as the greatest living science fiction writer and an outstanding visionary of our times. His writing over the past six decades – more than 100 books, 1,000 articles and short stories – have not only helped humanity find its way in times of rapid change, but also discussed the social and cultural implications of key technologies.