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Wednesday, April 29, 2009

Orchards may vanish by the end of the century, conservationists warn

Apple orchard

An apple crop being harvested in Somerset. Their price is set to rise this year. Photograph: Mark Bolton/Corbis

Small traditional orchards could vanish from the British landscape by the end of the century unless action is taken to save them, environmental experts and campaigners warned yesterday.

Natural England and the National Trust claimed 60% of England's orchards had isappeared since the 1950s as they launched a £500,000 project aimed at halting the decline. The crisis has been even worse in some areas, such as Devon, which has lost almost 90% of its orchards.

The organisations argued that if nothing was done, a focal point for communities across the country and a crucial habitat for flora and fauna could be wiped out forever.

The loss of orchards would be accompanied by a huge loss of apple varieties, some unique to just a few square miles, and many of them with wonderfully eccentric names such as the Hangy Down, the Oaken Pin and Polly White Hair.

Steve Morris: 'Sixty per cent of smaller orchards have vanished' Link to this audio

David Bullock, the head of nature conservation at the National Trust, said: "Traditional orchards have been disappearing at an alarming rate. We are in real danger of losing these unique habitats."

Bullock also said that unless more was done to map the many disused orchards in England, rare varieties would be lost, with no records kept of them ever having existed.

In a blossom-filled apple orchard at Killerton, a National Trust estate in Devon, the scale of the crisis was spelled out.

Though cider has grown in popularity over the last few years, it tends to be made from apples grown intensively and treated with chemicals. Many smaller traditional orchards have been built on, or uprooted to make way for arable crops and pony paddocks.

That meant the loss of habitats for birds, beetles including the threatened Noble Chafer, mammals — such as long-eared bats — moths, lichens and fungi.

For the purposes of the new £500,000 project, traditional orchards are defined as having at least five trees widely spaced and allowed to grow gnarled, hollowed and eventually fall where they stand . They are not intensively managed, are treated with few or no chemicals and are often grazed by animals such as sheep or geese or cut for hay.

Lucy Cordrey, the project manager, said: "Traditional orchards have become an extremely rare and precious habitat. We need to do something to stop this decline. Orchards bring people and wildlife together. It's about food, the culture behind them, the heritage. They are magical places to be in."

Under the two-year project old orchards are being restored and long forgotten or neglected ones rediscovered and mapped. Workshops are being set up to train people in skills such as pruning and grafting and communities are being told how they can revive old orchards, plant new ones and market the fruit they produce.

Sue Clifford, director of the environmental charity Common Ground, said she was confident the traditional orchard would be saved.

Clifford, whose favourite apple is the west country's Slack-ma-Girdle, said: "The interest is escalating. In the last two or three years we've seen a change in people's attitudes.

"We've been trying to excite people since the late eighties about traditional orchards. We've tried to say to them, look there's 2,300 varieties of eating and cooking apples, several hundred more of cider apples. And that's just apples. Think of the pears and the plums and the

damsons. And I think people are starting to realise that orchards are beautiful places. They are fantastic for wildlife and they are good for community spirit. "

Traditional orchards, traditional apples

Here are just a few of the varieties of apples to be found in the orchards of the Killerton estate in Devon:

Killerton Sweet

Unique to Killerton, a pale green cider apple. One of the varieties used in the estate's popular 6% cider.

Killerton Sharp

Also found only at Killerton. A little drier and sharper than the sweet, and gives the cider a bit of bite. Ripens in October.

Philbert Nut Bush

A bright red Somerset apple. Excellent in chutney but also makes a tasty desert apple.

Star of Devon

Originally from the village of Broadclyst just a few miles away from Killerton. A pale yellowy-green pithy apple.

Ten Commandments

Split it in two and you find 10 brown dots - hence the name. Pale green and yellow, becoming red as it ripens in late September and early October.

Friday, April 10, 2009

Kids Curb Marital Satisfaction

Parents all know that children make it harder to do some of the most enjoyable adult things. Bluntly put, kids can get between you.

Now scientists have attached some numbers to the situation.

An eight-year study of 218 couples found 90 percent experienced a decrease in marital satisfaction once the first child was born.

"Couples who do not have children also show diminished marital quality over time," says Scott Stanley, research professor of psychology at University of Denver. "However, having a baby accelerates the deterioration, especially seen during periods of adjustment right after the birth of a child."

An unrelated study in 2006 of 13,000 people found parents are more depressed than non-parents. Scientists speculate that the problem is partly a modern one, because parents don't get as much help at home as they did in previous generations.

There are key variables to note in the new study.

Couples who lived together before marriage experienced more problems after the birth of a child than those who lived separately before marriage, as did those whose parents fought or divorced.

However, some couples said their relationships were stronger post-birth. They tended to have been married longer or had higher incomes.

Children don't ruin everything, Stanley points out.

"There are different types of happiness in life and that while some luster may be off marital happiness for at least a time during this period of life, there is a whole dimension of family happiness and contentment based on the family that couples are building," he said. "This type of happiness can be powerful and positive but it has not been the focus of research."

The new research, funded by a grant to the University of Denver from the National Institutes of Health, is detailed in the Journal of Personality and Social Psychology.

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Cambridge University Unveiled Solar Car

Cambridge University Eco Racing’s (CUER) new solar racing car demonstrates cutting-edge environmentally-friendly technology, applicable to the next generation of electric vehicles.
Cambridge University Unveiled Solar Car

The vehicle, currently codenamed ‘Bethany‘, will compete in the World Solar Challenge in Australia in October 2009. This vehicle is capable of cruising at 60mph using the same power as a hairdryer. The car will weigh just 160kg and sports 6m2 of the world’s highest efficiency silicon solar cells.

In order to achieve the car’s extraordinary performance, CUER’s engineering team has systematically reduced energy usage for each part of the car. Aerodynamics, rolling resistance, weight and electrical efficiency have all been optimised to create a vehicle that uses up to 50 times less power than a normal petrol car and has potentially infinite range.

Extensive computer modelling and simulation have been necessary to achieve this, using Dassault Systèmes’ SolidWorks and Simulia packages for mechanical design, ANSYS’s Fluent for aerodynamic simulation, as well as National Instrument’s LabVIEW and The MathWorks’ MatLab and Simulink for systems modelling. Under its solar skin, the racing car is simply an ultra-efficient electric vehicle.

The technologies used are therefore applicable to the commercial electric cars that are beginning to appear on our roads. Technologies used include a 98% efficient electric hub motor, control systems providing battery management (supplied by REAPsystems) and regenerative braking, lightweight mechanical design, and carbon fibre composite bodywork.

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