A team of scientists at MIT has discovered a previously unknown phenomenon that can cause powerful waves of energy to shoot through minuscule wires known as carbon nanotubes, a discovery that could lead to a new way of producing electricity.

The phenomenon, described as thermopower waves, “opens up a new area of energy research, which is rare,” said Michael Strano, MIT’s Charles and Hilda Roddey Associate Professor of Chemical Engineering, who was the senior author of a paper describing the new findings.

Like a collection of flotsam propelled along the surface by waves traveling across the ocean, it turns out that a thermal wave — a moving pulse of heat — traveling along a microscopic wire can drive electrons along, creating an electrical current. The key ingredient in the recipe is carbon nanotubes — submicroscopic hollow tubes made of a chicken-wire-like lattice of carbon atoms.

In the new experiments, each of these electrically and thermally conductive nanotubes was coated with a layer of a highly reactive fuel that can produce heat by decomposing.

This fuel was then ignited at one end of the nanotube using either a laser beam or a high-voltage spark, and the result was a fast-moving thermal wave travelling along the length of the carbon nanotube like a flame speeding along the length of a lit fuse.

According to Strano, in the group’s initial experiments, when they wired up the carbon nanotubes with their fuel coating in order to study the reaction, “lo and behold, we were really surprised by the size of the resulting voltage peak” that propagated along the wire.

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A team of scientists has discovered magnetic waves that fluctuate when exposed to certain conditions in a superconducting material.

The finding was made by Brown University physicist Vesna Mitrovic and colleagues at Brown and in France.

At the quantum level, the forces of magnetism and superconductivity exist in an uneasy relationship.

Superconducting materials repel a magnetic field, so to create a superconducting current, the magnetic forces must be strong enough to overcome the natural repulsion and penetrate the body of the superconductor. This relationship is pretty well known. But why it is so remains mysterious. Now, physicists at Brown University have documented for the first time a quantum-level phenomenon that occurs to electrons subjected to magnetism in a superconducting material.

They report that at under certain conditions, electrons in superconducting material form odd, fluctuating magnetic waves.
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Hair preserved in permafrost for 4,000 years has shed light on a tribe of Stone Age hunters who crossed from Siberia to Greenland in an unsung odyssey of migration, scientists said on Wednesday.

Unearthed at a site in western Greenland, the hair provides a vivid portrait of a man who died four millennia ago and overturns a mainstream theory about how humans colonised the Arctic New World, they said.

Greenland’s first known settlers were not Inuit or Native Americans as widely believed, but the direct descendants of Siberians who somehow crossed the Bering Strait to Alaska and then headed east, according to their report, published by Nature.

The tuft of hair and four pieces of bone, uncovered at Qeqertasussuk, are the only human remains ever found of Saqqaq culture, an enigmatic coastal-dwelling community that lived in western Greenland for some 1,700 years.

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This traditional portrait of Athanasius Kircher gives his age as 76. The engraver has emphasized the energy in Kircher’s inquiring eyes. A professor of eloquence in Rome added the flowery inscription: “The painter or poet would declare only in error: ‘This is the man.’ But the farthest Antipodes know his name and face.”

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One of the world’s oldest shipwrecks has been discovered off the coast of Devon after lying on the sea bed for almost 3000 years.

The trading vessel was carrying an extremely valuable cargo of tin and hundreds of copper ingots from the Continent when it sank.

Experts say the ”incredibly exciting” discovery provides new evidence about the extent and sophistication of Britain’s links with Europe in the Bronze Age, and reveals the remarkable seafaring abilities of the people during the period.

Archaeologists have described the vessel, which is thought to date back to about 900BC, as being a ”bulk carrier” of its age. The copper and tin would have been used for making bronze, the primary product of the period which was used in the manufacture of weapons, tools, jewellery, ornaments and other items.

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The green brigade has precisely touched most of the industries; Automobile can be left as the fuel consumption is the highest in this sector. Efforts have been made in the past to promote electric cars but the end result has not been impressive to many. Electronic cars launched previously had few draw backs like their top speed not exceeding 20 miles per hour, long recharge hours, expensive and two seating capacity. Though they make no noise and are pollution free vehicles it didn’t made any difference.

A lot of time and money has been put in developing these electric cars and make them more lucrative to the buyer.

UK is coming up with a Electric car which will be a four seater, can run up to 70 miles without bothering to be recharged. It’s a Citroen C1 based car, which is joint venture by Peugeot, Toyota and Citroen. It shall take only six to seven hours to charge and can be charged in a 13a normal socket. Subsidies are also being discussed with British government to encourage people to go in for a Citroen C1. By 2011 Citroen C1will hit the market.
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Bird watchers walking along the beach on the Baltic island of Öland off Sweden’s southeastern coast were puzzled by an unusual natural phenomenon recently when they stumbled across dozens of football-sized balls of ice lying on the shore.

A week before Christmas, Magnus Bladh of the Ottenby bird station, located on Öland’s southern cape, was strolling along the beach with a colleague when he saw something he’d never seen before.

“Temperatures were below freezing and there was a light wind, but it was very cold! In the seaweed we noticed at least 200 large ice balls,” he said in a report to Swedish meteorological agency SMHI.

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The discovery of the “pacemaker gene” could lead to new drug treatments to avoid heart attacks and disease, say experts.

A person’s heartbeat is controlled by electrical signals, which start in one central place – the heart’s pacemaker – and travel around the heart muscle.

And now, a team at Imperial College London have found the gene that controls those electrical signals and thus the rhythm of the heart.

The researchers claimed that the damage or mutations to the gene – known as SCN10A – increase the risk of heart disease.

The researchers believe that the finding could help them to understand how the body’s heartbeat is controlled and could ultimately help them come up with new treatments for heart rhythm disturbances.

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Amazing similarity

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Scientists investigating a large crater in a field in northern Latvia, believed to have been caused by a meteorite, now suspect it was a hoax.

The Latvian media reported on the fall of the meteorite near the city Mazsalaca Valmiera District. In the area of the fall of the meteorite crater width 20 and depth of 10 meters.

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