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They say it was the mother of all cosmic explosions. The blast, which took place on June 30, 1908, in Tunguska, Siberia, also remains one of the greatest mysteries of the world. Russia is now organising an international conference in Moscow to mark the centenary of the explosion. The Siberian riddle has fascinated the world since an object entered the atmosphere over western China and whizzed north, leaving a 5,000 degree hot trail in the sky, to hit the banks of the Tunguska river. The explosion has exposed the fragility of mankind to a blitzkrieg from outer space. It has also led to a wide range of theories. A virtual search for an explanation in the company of scientists engaged in unraveling its mystique is revealing…    more »

The possibility of extraterrestrial life is a subject that has fascinated Hawking very much and on and off he speculates its possibility in a vigorous way. In fact he holds such a possibility quite firmly, perhaps more as a matter of a scientist’s faith than anything based on observed or observable facts. In one of his lectures he says: “Meeting a more advanced civilisation, at our present stage, might be a bit like the original inhabitants of America meeting Columbus. I don’t think they were better off for it.” But that will hardly be of any consequence when it comes to the procedural aspects of scientific observations and conclusions. ~ RYD   more »

In 1860, while studying primroses in the garden of Down House, his home in Kent, England, Charles Darwin noticed something odd about their blooms. While all the flowers had both male and female parts — anthers and pistils — in some the anthers were prominent and in others the pistils were longer. So he experimented in his home laboratory and greenhouses, cross-pollinating some plants with their anatomical opposites. The results were striking. “He determined that if they cross-pollinate, they produce more seed and more vigorous seedlings,” said Margaret Falk, a horticulturalist and associate vice president at the New York Botanical Garden. The variation is evolution’s way of increasing cross-pollination, she said. Now the Botanical Garden is replicating this work, and more of Darwin’s Down House experiments, in a stunning, multipart exhibition called “Darwin’s Garden: An Evolutionary Adventure.” …   more »

Two computer screens display images of the first edition copy of Charles Darwin’s On the Origin of Species in London on Thursday.

The project began in 2002 and this is the last major set of additions. Dr John van Wyhe, Darwin Online’s director, said: “[The documents] have been known to scholars, but for the first time they are available to everyone for free online.” One set of pages that is likely to attract considerable interest is Darwin’s scrawled first draft of his theory of evolution from 1842. The scribbled argument is crammed with afterthoughts, footnotes and crossed-out text. A transcript of the text has been published previously, but few will have seen the original facsimile of Darwin’s unpolished thought process. “There is a kind of fascination about it having all the original handwriting and the places where he was making changes and was struggling with issues,” said Dr. Paul White, part of the Darwin Correspondence Project, a separate effort to catalogue Darwin’s letters. …   more »

The global economy is not decarbonising—it is recarbonising. There must be a much larger commitment to fundamental energy technology R &D …   more »

Trees play an important part in regulating pollution and climate in towns and cities, but are falling foul of insurance companies and councils who are felling healthy, mature trees in their thousands. An unusual contest is taking shape during the London mayoral campaign: candidates are fighting to see who can promise to plant the most trees. Boris Johnson has pledged to put up 10,000 street trees in London while Ken Livingstone has described the Conservative candidate's target as "incredibly unambitious" and claimed he will plant 600,000 trees by 2012. All the time, however, trees are being removed from the capital, and in other cities across the country, because of health and safety issues, security fears and, most commonly, insurance claims and threats from loss adjusters.…   more »

It has been a hundred years since the two geniuses, one an outstanding American inventor and one a great Russian writer, exchanged what we might now call “intellectual products.” However, the story still has many historical riddles associated with it.
The two men are Thomas Edison, who perfected and patented more than a thousand inventions, and Leo Tolstoy…

Edison’s album in which he kept comments by famous people on his inventions contains a note by Tolstoy: “The most powerful force in the world is thought. The more forms of expression it finds the more that force can manifest itself. The invention of printing was a milestone in human history. The appearance of the telephone and especially the phonograph, which is the most effective and impressive medium for recording and preserving not only the words, but the shades of the voice that says them, will mark another era.” [signed] ‘Leo Tolstoy.’ ...   more »

Digging has resumed at a site in the southeastern German town of Deutschneudorf, where treasure hunters believe there are almost 2 tons of Nazi gold and possibly clues to the whereabouts of the legendary Amber Room, a prize taken from a Russian castle during World War II. Treasure hunters use modern technology to try to locate the lost Nazi gold. Heinz Peter Haustein, one of the two treasure hunters and a member of Germany's parliament, said: "We have already hit a hollow area under the surface, it's filled with water and we are not sure if it is the cave we are looking for." …   more »

The world’s physicists have spent 14 years and $8 billion building the Large Hadron Collider, in which the colliding protons will recreate energies and conditions last seen a trillionth of a second after the Big Bang. Researchers will sift the debris from these primordial recreations for clues to the nature of mass and new forces and symmetries of nature.

But Walter L. Wagner and Luis Sancho contend that scientists at the European Center for Nuclear Research, or CERN, have played down the chances that the collider could produce, among other horrors, a tiny black hole, which, they say, could eat the Earth. Or it could spit out something called a “strangelet” that would convert our planet to a shrunken dense dead lump of something called “strange matter.” …

As part of the safety assessment report, Dr. Mangano and Steve Giddings of the University of California, Santa Barbara, have been working intensely for the last few months on a paper exploring all the possibilities of these fearsome black holes. They think there are no problems but are reluctant to talk about their findings until they have been peer reviewed, Dr. Mangano said.

Dr. Arkani-Hamed said concerning worries about the death of the Earth or universe, “Neither has any merit.” He pointed out that because of the dice-throwing nature of quantum physics, there was some probability of almost anything happening. There is some minuscule probability, he said, “the Large Hadron Collider might make dragons that might eat us up.” …   more »

The LED lamp designed by Clay Moulton and named Gravia, forming a portion of his master’s thesis, has just won second place in the Greener Gadgets Design Competition as part of the Greener Gadgets Conference in New York City. ...

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If we have seen the possibilities and pitfalls in Big Science given to us by the American model, we also notice its results in other places,—for example in Japan. Japan's first experience with high-level business and industrial development forms a good illustration to see how one can get trapped on the economic path when something alien enters into the system. Yoshiro Hoshino writes: “There is nothing worse than war for bringing about the destruction of nature, human beings, factories, housing, and transportation systems, and for causing starvation and sickness, the discharge of untreated factory wastes, and the destruction of farm lands. When environmental destruction is understood in its broadest and most fundamental sense, the original culprit is war.” America, after the bombing of Hiroshima and Nagasaki in 1945, invaded Japan in another way. It looks as though the evil found another soil to grow and flourish in a vigorous manner. The present article Japan’s Second Defeat after the Second World War forms a chapter of my yet unpublished book Big Science and its Impact on Society....   more »

The poet Shelley, who immortalised the skylark, would have been saddened to know that threatened songbirds in Spain are losing their voice. A study has found Dupont’s lark, a relative of the skylark, is losing its singing range because numbers are falling. Biologists from the Donana National Park in Andalucia found that when male larks had fewer birds from which to learn new notes or ranges their repertoire decreased. The number of notes a male uses is vital in attracting females. Dupont’s lark, Chersophilus duponti, is found in Europe only in southern, central and north-east Spain and there are thought to be only 2,000 birds remaining as their natural habitat has been destroyed by man...    more »

On 29 March 2008, people around the world will switch off lights for one hour from 8-9 pm to show a stand against global warming...   more »

The fingerprints of man-made climate change are evident in seasonal timing changes for thousands of species on Earth, according to dozens of studies and last year’s authoritative report by the Nobel Prize-awarded international climate scientists. More than 30 scientists told The Associated Press how global warming is affecting plants and animals at springtime across the country, in almost every state. What is happening is so noticeable that scientists can track it from space. Satellites measuring when land turns green found that spring “green-up” is arriving eight hours earlier every year on average since 1982 in the northeastern United States...    more »

Among the giants of the imaginative promotion of the ideas of interplanetary travel, the colonising by man of nearby planets and the urgent need for peaceful exploration of outer space, Sir Arthur C. Clarke, who has died aged 90, was pre-eminent, because of his hard and accurate predictions of the detailed technologies of space flight and the use of near-Earth space for global communications. Yet, in spite of his deep seriousness, JB Priestley described him in the 1950s as the happiest writer he had ever known. Tallish, bespectacled, rather big-eared and thinning on top, Clarke tended to be described by friends as a beaming and highly articulate shambles of a chap, a man to whom convention meant very little. Yet his mind was like a razor. Unlike earlier writers on space travel, his imagination and creativity sprang, not from fantasy, but from sharp scientific and technical insight, unfettered by the arbitrary limitations of the perceptions of his time. His amazing career was possible largely because he was never, in any ordinary sense, quite a part of this world. Indeed, he chose to live in Sri Lanka, partly because it helped him neutralise the influence of western culture. As he approached 80, it seemed that he had done almost everything that was possible in a lifetime…    more »

Managing climate change first appeared in The Hindu dated 13 March 2008 in which the claims and responsibilities of the developing and advanced societies are discussed. “The issue is often portrayed as a battle between the developed and the developing world. Wrong. It is something which affects us all and which we need to address together.” It is a matter of concern for us all—says Sir Richard Stagg who is a career diplomat and British High Commissioner to India.   more »