Read the text and answer the questions.

Passage 1

LONGAEVA:

Ancient Bristlecone Pine

A

To understand more about the earth's history, humans have often looked to the natural environment for insight into the past. The bristlecone pine (Pinus longaeva), of the White Mountains in California, has served this purpose greater than any other species of tree on the planet. Conditions here are brutal: scant precipitation and low average temperatures mean a short growing season, only intensified by ferocious wind and mal-nutritious rocky. Nevertheless, bristlecone pines have claimed these barren slopes as their permanent home.Evolving here in this harsh environment, super-adapted and without much competition, bristlecones have earned their seat on the longevity throne by becoming the oldest living trees on the planet. Results of extensive studies on bristlecone pine stands have shown that in fact such, environmental limitations are positively associated with the attainment of great age. This intriguing phenome will be discussed further on.

B

But exactly how old is old? Sprouted before the invention of Egyptian hieroglyphs and long before the teachings of Jesus of Nazareth, Dethuselah is the oldest bristlecone alive at roughly 4,700 years. Although specimens of this age do not represent the species' average, there are 200 trees more than 3,000 years old, and two dozen more than 4,000. Considering that these high ages are obtained in the face of such remarkable environmental adversity, the bristlecone pines have become the focus of much scientific examination over the past half century.

C

Perhaps most interested in the bristlecone pine are dendochronologists, or tree-ring daters.With every strenuous year that passes in White Mountains, each bristlecone grows  nd forms a new outer layer of cambium that reflects a season's particular ease or hardship. So while growing seasons may expand or shrink, the trees carry on, their growth rings faithfully recording the bad years alongside the goods. Through examining the annual growth rings of both living and dead specimens, taking thousands of core samples, and by processes of cross-dating between trees and other qualitative records, scientists have compiled a continuous tree-ring record that dates back to the last lce Age between eight and ten thousand years ago. Among other linked accomplishments, this record has enhanced the dating process, helping to double-check and correct the radiocarbon-14 method to more accurately estimate the age of organic material.

D

Now more than ever the importance of monitoring the bristlecone is being realized. As our global climate continues to undergo its most recent and abrupt atmospheric change, these ancient scribes continue to respond. Since, the rings of wood formed each year reveal the trees' response to climatic conditions during a particular growing seasons, in their persistence they have left us natural recordings of the past, markers of the present, and clues to the future.

E

The species' name originates from the appearance of its unusual cones and needles. The bristlecone's short, pale needles are also trademarks bunching together to form foxtail-like bundles. As is the case of most conifer needles, these specialized leaves cluster together to shelter the stomata so very little moisture is lost through them. This adaptation helps the bristlecone photosynthesize during particularly brutal months, Saving the energy of constant needle replacement and providing a stable supply of chlorophyll. For a plant trying to store so much energy, bristlecone seeds are relatively large in size. They are first reproduced when trees reach ages between thirty and seventy-five years old. Germination rates are generally high, in part because seeds require little to no initial stratification. Perhaps the most intriguing physical characteristic of a mature bristlecone, however, is its ratio of living to dead wood on harsh sites and how this relates to old age. In older trees, however, especially in individuals over 1,500 years, a strip-bark trait is adaptive. This condition occurs as a result of cambium dieback, which erodes and thereby exposes certain areas of the bole, leaving only narrow bands of bark Intact.

F

The technique of cambial edge retreat has helped promote old age in bristlecone pine, but that certainly is not the only reason. Most crucial to these trees' longevity is their compact size and slow rates of growth. By remaining in most cases under ten meters tall, bristlecones stay close to the limited water supply and can hence support more branches and photosynthesizing. Combined with the dry, windy, and often freezing mountain air, slow growth guarantees the bristlecones tight, fibrous rings with a high resin content and structural strength. The absence of natural disaster has also safeguarded the bristlecone's lengthy lifespan. Due to a lack of ground cover vegetation and an evenly spaced layout, bristlecone stands on the White Mountain peaks have been practically unaffected by fire. This lack of vegetation also means a lack of competition for the bristlecones.

G

Bristlecone pine's restricted to numerous, rather isolated stands at higher altitudes in the southwestern United States. Stands occur from the Rocky Mountains, through the Coloraso Plateau, to the western margin of the Great Basin. Within this natural range, the oldest and most widely researched stands of bristlecones occur in California's White Mountains. Even just 200 miles away from the Pacific Ocean, the White Mountains are home to one of this country's few high-elevation deserts. Located in the extreme eastern rain shadow of the Sierra Nevada, this region receives only 12.54 inches of precipitation per year and experiences temperatures between -20F and+50F. The peaks south of the Owens Valley are higher up than they might appear from a distance. Although most summits exist somewhere around 11,000 feet, snow-capped White Mountain Peak, for which the range is named, stands at 14,246 feet above sea level. That said, to reach  reas of pure bristlecone is an intense journey all to itself.

H

 With seemingly endless areas of wonder and interest, the bristlecone pines have become subject to much research over the past half-century. Since the annual growth of these ancient organisms directly reflects the climatic conditions of a particular time period, bristlecones are of greatest significance to dendochronologists, or tree-ring specialists. Dating any tree is simple and can be done within reasonable accuracy just by counting out the rings made each year by the plant's natural means of growth. By arefully compiling a nearly 10,000-year-old bristlecone pine record, these patient  scientists have accurately corrected the carbon-14 dating method and estimated ages of past periods of global climate change. What makes this record so special to dendochronologists, too, is that, nowhere, throughout time, is precisely the same long-term sequence of wide and narrow rings repeated, because year-to-year variations in climate are never exactly the same.

I

Historically the bristlecone's remote location and gnarled wood have deterred commercial extraction, but nothing on earth will go unaffected by global warming. If temperatures rise by only 6 degrees F, which many experts say is likely this century, about two-thirds of the bristlecones' ideal habitat in the White Mountains effectively will be gone. Almost 30,000 acres of National Forest now preserves the ancient bristlecone, but paved roads, campsites, and self-guided trails have led only to more human impact. In 1966, the U.s.F.S reported over 20,00 visitors to the Ancient Bristlecone Pine Forest, a figure which could exceed 40,000 today. Over the past hundreds of thousands of years, this species has endured in one of earth's most tying environments; they deserve our respect and reverence. As global climate change slowly alters their environment, we as humans must do our part to raise awareness and lower our impact.

Passage 2

The Farmers! parade of history

A

History of Farmer trading company: In 1909 Robert Laidlaw establishes mail-order company Laidlaw Leeds in Fort Street, Auckland. Then, Branch expansion: purchase of Green and Colebrook chain store; further provincial stores in Auckland and Waikato to follow. Opening of first furniture and boot factory. In 1920, Company now has 29 branches; Whangarei store purchased. Doors open at Hobson Street for direct selling to public. Firm establishes London and New York buying offices. With permission from the Harbour Board, the large FARMERS electric sign on the Wyndham Street frontage is erected.

B

In 1935, if the merchandise has changed, the language of the catalogues hasn't. Robert Laidlaw, the Scottish immigrant who established the century-old business, might have been scripting a modern-day television commercial when he told his earliest Customers: Satisfaction, or your money back. "It was the first money back guarantee ever offered in New Zealand by any firm," says lan Hunter, business historian. "And his mission statement was, potentially, only the second one ever found in the world." Laidlaw's stated aims were simple to build the greatest business in New Zealand, to simplify every transaction, to eliminate all delays, to only sell goods it would pay the customer to buy.

C

This year, the company that began as a mail-order business and now employs 3500 staff across 58 stores turns 100.Its centenary will be celebrated with the release of a book and major community fundraising projects, to be announced next week. Hunter, who is writing the centenary history, says "coming to a Farmers store once a week was a part of the New Zealand way of life". By 1960, one in every 10 people had an account with the company. It was the place where teenage girls shopped for their first bra, where newlyweds purchased their first dinner sets, where first pay cheques were used to pay off hire purchase furniture, where Santa paraded every Christmas.

D

Gary Blumenthal's mother shopped there, and so does he. The fondest memory for the Rotorua resident? "We were on holiday in Auckland.... decided that up on the lookout tower on top of the Farmers building would be a unique place to fit the ring on my new fiancée's finger." The lovebirds, who had to wait for "an annoying youth" to leave the tower before they could enjoy their engagement kiss, celebrate their 50th wedding anniversary in June.

E

 "Farmers, says Hunter, has always had a heart. This, from a 1993 North & South interview with a former board chairman, Rawdon Busfield: "One day I was in the Hobson Street shop and I saw a woman with two small children. They were clean and tidily dressed, but poor, you could tell. That week we had a special on a big bar of chocolate for one shilling. I heard the woman say to her boy, 'no, your penny won't buy that’. He wasn't wearing shoes. So I went up to the boy and said, 'Son, have you got your penny?' He handed it to me. It was hot he'd had it in his hand for hours. I took the penny and gave him the chocolate.””

F

Farmers was once the home of genteel tearooms, children's playgrounds and an annual sale of celebration for birthday of Hector the Parrot (the store mascot died, aged 131, in the 1970s his stuffed remains still occupy pride of place at the company's head office). You could buy houses from Farmers. Its saddle factory supplied the armed forces, and its upright grand overstrung pianos offered "the acme of value'" according to those early catalogues hand-drawn by Robert Laidlaw himself. Walk through a Farmers store today and get hit by bright lights and big brands. Its Albany branch houses 16 international cosmetics companies. It buys from approximately 500 suppliers, and about 30% of those are locally owned.

G

"Eight, 10 years ago," says current chief executive Rod McDermott, "lots of brands wouldn't partner with us. The stores were quite distressed. We were first price point focused, we weren't fashion focused. "Remove the rose-tinted nostalgia, and Farmers is, quite simply, a business, doing business in hard times. Dancing with the Stars presenter Candy Lane launches a clothing line? "We put a trial on, and we thought it was really lovely, but the uptake wasn't what we thought it would be. It's got to be what the customer wants," says McDermott.

H

 "He acknowledges retailers suffer in a recession: "We're celebrating 100 years because we can and because we should." Farmers almost didn't pull through one economic crisis. By the mid-1980s, it had stores across the country. It had acquired the South Island's Calder Mackay chain of stores and bought out Haywrights. Then, with sales topping $375 million, it was taken over by Chase Corporation. Lincoln Laidlaw, now aged 88, and the son of the company's founder, remembers the dark days following the stockmarket crash and the collapse of Chase. "I think, once, Farmers was like a big family and all of the people who worked for it felt they were building something which would ultimately be to their benefit and to the benefit of New Zealand... then the business was being divided up and so that kind of family situation was dispelled and it hasn't been recovered."

For a turbulent few years, the stores were controlled, first by a consortium of Australian banks and later Deka, the Maori Development Corporation and Foodland Associated Ltd. In 2003, it went back to "family" ownership, with the purchase by the James Pascoe Group, owned by David and Anne Norman the latter being the great-granddaughter of James Pascoe, whose first business interest was jewelry."

I

Sheer power of the brand, says McDermott, "pulled Farmers through and now we're becoming the brand it used to be again." Farmers was the company that, during World War II, topped up the wages of any staff member disadvantaged by overseas service. Robert Laidlaw a committed Christian who came to his faith at a 1902 evangelistic service in Dunedin concluded his original mission statement with the words, "all at it, always at it, wins success". Next week, 58 Farmers stores across the country will announce the local charities they will raise funds for in their centenary celebration everything from guide dog services to hospices to volunteer fire brigades will benefit. Every dollar raised by the community will be matched by the company. "It's like the rebirth of an icon," says McDermott.

Passage 3

Inside the mind of a fan

How watching sport affects the brain

A

At about the same time that the poet Homer invented the epic hero, the ancient Greeks started a festival in which men competed in a single race, about 200 metres long. The winner received a branch of wild olives. The Greeks called this celebration the Olympics. Through the ancient sprint remains, today the Olympics are far more than that. Indeed, the Games seem to celebrate the dream of progress as embodied in the human form. That the Games are intoxicating to watch is beyond question. During the Athens Olympics in 2004, 3.4 billion people, half the world, watched them on television. Certainly. Being a spectator is a thrilling experience but why?

B

In 1996, three Italian neuroscientists, Giacomo Rizzolatti, Leonardo Fogassi, and Vittorio Gallese, examined the premotor cortex of monkeys. They discovered that inside these primate brains there were groups of cells that 'store vocabularies of motor actions'. Just as there are grammars of movement. These networks of cells are the bodily ‘sentences' we use every day, the ones our brain has chosen to retain and refine. Think, for example, about a golf swing. To those who have only watched the Masters Tournament on TV, golfing seems easy. To the novice, however, the skill of casting a smooth area with a lop-side metal stick is vitally impossible. This is because most novices swing with their consciousness, using an area of the brain next to the premotor cortex. To the expert, on the other hand, a perfectly balanced stroke is second nature. For him, the motor action has become memorized, and the movements are embedded in the neurons of his premotor cortex. He hits the ball with the tranquility of his perfected autopilot.

C

These neurons in the premotor cortex, besides explaining why certain athletes seem to possess almost unbelievable levels of skill, have an even more amazing characteristic, one that caused Rizlatti, Fogassi and Gallese to give them the lofty title 'mirror neurons'. They note, 'The main functional characteristic of mirror neurons is that they become active both when the monkey performs a particular action (for example, grasping an object or holding it) and, astonishingly, when it sees another individual performing a similar action.’ Humans have an even more elaborate mirror neuron system. These peculiar cells mirror, inside the brain, the outside world: they enable us to internalise the actions of another. In order to be activated, though, these cells require what the scientists call 'goal-orientated movements'. If we are staring at a photograph, a fixed image of a runner mid-stride, our mirror neurons are totally silent. They only fire when the runner is active: running, moving, or sprinting.

D

What these electrophysiological studies indicate is that when we watch a golfer or a runner in action, the mirror neurons in our own premotor cortex light up as if we were the ones competing. This phenomenon of neural mirror was first discovered in 1954, when two French physiologists, Gastaut and Berf, found that the brains of humans vibrate with two distinct wavelengths, alpha and mu. The mu system is involved in neural mirroring. It is active when your bodies are still, and disappears whenever we do something active, like playing sport or changing the TV channel. The surprising fact is that the mu signal is also quiet when we watch someone else being active, as on TV, these results are the effect of mirror neurons.

E

Rizzolatti, Fogassi, and Gallese call the idea of mirror neurons the 'direct matching hypothesis'. They believe that we only understand the movement of sports stars when we ‘map the visual representation of the observed action onto our motor representation of the same action'. According to this theory, watching an Olympic athlete 'causes the motor system of the observer to resonate. The "motor knowledge" of the observer is used to understand the observed action.' But mirror neurons are more than just the neural basis for our attitude to sport. It turns out that watching a great golfer makes us better golfers, and watching a great sprinter actually makes us run faster. This ability to learn by watching is a crucial skill. From the acquisition of language as infants to learning facial expressions, mimesis (copying) is an essential part of being conscious. The best athletes are those with a premotor cortex capable of imagining the movements of victory, together with the physical properties to make those movements real.

F

But how many of us regularly watch sports in order to be a better athlete? Rather, we watch sport for the feeling, the human drama. This feeling also derives from mirror neurons. By letting spectators share in the motions of victory, they also allow us to share in its feelings. This is because they are directly connected to the amygdale, one of the main brain regions involved in emotion. During the Olympics, the mirror neurons of whole nations will be electrically identical, their athletes causing spectators to feel, just for a second or two, the same thing. Watching sports brings people together. Most of us will never run a mile in under four minutes or hit a home run. Our consolation comes in watching, when we gather around the TV, we all feel, just for a moment, what it is to do something perfectly.