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Hybrid Nanowires And A Crystal Wedding In The Nanocosmos

Researchers have succeeded in embedding nearly perfect semiconductor crystals into a silicon nanowire...

Ketamine, The Emergency Room Wonder Drug

Ketamine has been used by emergency departments for analgesia, sedation and amnesia for rapid...

Climate Change And Soil Respiration

The planet's soil releases about 60 billion tons of carbon into the atmosphere each year, which...

Has Voyager 1 Really Left The Solar System?

Where does the solar system end and interstellar space begin? There are no 'Now Leaving...' signs...

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Researchers writing in PMC Physics B have found that the rate at which electrons lose energy to carbon monoxide is greater than that to carbon dioxide at higher levels in the atmospheres of both Mars and Venus.

This finding contributes to the body of knowledge required for modelling of the atmospheres of Mars and Venus, which in turn provides an opportunity to validate the techniques used in modelling of more complicated atmospheres such as that of Earth.

Solar energy is both absorbed in atmospheres and eventually emitted to space by processes at the atomic level. These complicated processes need to be parameterised so that huge numbers of individual interactions can be included in models. Modelling of the atmospheres of other planets is useful because the techniques can be developed and tested on different environments, which are not complicated by biological or human activity.

Vivid colors, flowing silk ribbons, and glittering bits of mirrors - the Vikings dressed with considerably more panache than we previously thought. The men were especially vain, and the women dressed provocatively, but with the advent of Christianity, fashions changed, according to Swedish archeologist Annika Larsson.

"They combined oriental features with Nordic styles. Their clothing was designed to be shown off indoors around the fire," says textile researcher Annika Larsson, whose research at Uppsala University presents a new picture of the Viking Age.

She has studied textile finds from the Lake Mälaren Valley, the area that includes Stockholm and Uppsala and was one of the central regions in Scandinavia during the Viking Age.

If you are reading this, chances are that you live in a city – one, perhaps, on its way to becoming a megacity with a population that exceeds 10 million or more. If not, you and most of the world’s population soon will be, according to global population demographics projections.

“When we think of global change, images of melting ice caps and pasture replacing tropic rainforest come to mind,” Arizona State University ecologist Nancy Grimm says. “What drives these changes? In fact, much of the current environmental impact originates in cities, and with demographic transition to city life the urban footprint is likely to continue to grow.”

Applying organic fertilizers, such as those resulting from composting, to agricultural land could increase the amount of carbon stored in these soils and contribute significantly to the reduction of greenhouse gas emissions, according to new research published in a special issue of Waste Management & Research.

Carbon sequestration in soil has been recognized by the Intergovernmental Panel on Climate Change and the European Commission as one of the possible measures through which greenhouse gas emissions can be mitigated.

As thousands flock to ‘Fairtrade Fortnight’ events all over Britain, Free Trade Nation, a new book by Professor Frank Trentmann, Director of the Economic and Social Research Council-funded Cultures of Consumption programme, shows that ethical consumerism was already flourishing over a century ago.

Then, it was Free Trade that brought millions of Britons onto the streets, promoting peace, justice and democracy.

‘Today, Free Trade is often viewed as the new slavery,’ says Professor Trentmann. ‘Look at the anti-globalisation demonstrations at the WTO and G8 summits. People see Fairtrade as the way to peace and justice. Fairtrade is cool, even sexy, and attracts widespread support from eco-warriors to rock stars. But what people don’t know is that Free Trade was once an equally popular movement, and similarly seen as the path to democracy.’

A healthy individual loses around a hundred hairs a day. Nothing to worry about as long as they are constantly replaced and the losses occur evenly around the whole scalp. But when hair loss goes well beyond this level it can become quite a problem for those affected – not only superficially in terms of looks but also psychologically.

A breakthrough on the hair front has now been made by an international research team headed by scientists at the University of Bonn. After six years of research they have succeeded in identifying a gene that is responsible for a rare hereditary form of hair loss known as Hypotrichosis simplex.

The scientists are the first to identify a receptor that plays a role in hair growth. They now hope that their research findings will lead to new therapies that will work with various forms of hair loss.