EMI case banker ‘can’t remember’

Citigroup banker David WormsleyMr Wormsley alleged that Mr Hands had lied to EMI

A Citigroup banker has said that he cannot remember key phone calls with Terra Firma boss Guy Hands, in a court case over the sale of music label EMI.

“I don’t remember any of the calls specifically,” he said on his first full day of testimony in New York.

He is accused of misleading the private equity firm into believing that there was a rival bid for EMI, causing Mr Hands to up his bid to £4bn ($6.3bn).

“I would love to be able to remember it but I don’t,” he told Mr Hands’ lawyer.

Mr Hands claims the banker misled him in three separate calls over the weekend of 18-20 May 2007 about a non-existent bid from rival Cerberus Capital.

The banker also denied remembering telling Mr Hands “not to play games” with the price he was offering EMI shareholders.

When presented by Mr Hands’ lawyer with an e-mail that the banker had sent to an EMI executive saying he had told the Terra Firma boss exactly this, Mr Wormsley conceded that it must be true, but continued to maintain that he had no independent recollection of the event.

However, the Citigroup banker claimed he did remember getting “furious” with Mr Hands.

Mr Wormsley alleged that Mr Hands had lied to EMI, by claiming that Mr Wormsley had advised him that EMI would accept a lower bid.

He claimed this incident explained why he would have told Mr Hands not to play games, and that Mr Hands had subsequently called, leaving a message on his answerphone in which he “apologised for lying”.

When asked to produce the answerphone message, the banker said he had intended to keep it, but it was erased.

Mr Hands says EMI is worth only three-quarters of the price he paid. If he loses the case, he may be forced to hand ownership over to Citigroup, who provided £2.6bn in loans for the deal.

Closing arguments in the case are expected by next week.

This article is from the BBC News website. © British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.

BAA sees sharply reduced losses

Stansted AirportBAA is being forced to sell Stansted airport and one of Edinburgh and Glasgow airports

Airport operator BAA has reported a significant reduction in losses for the nine months to the end of September and strong growth in passenger numbers.

Pre-tax losses came in at £192.6m, down from £784.7m in the same period a year ago. Revenue was up 4.4% at £1.55bn.

The company reported “record passenger traffic” between July and September.

Earlier this month, BAA lost an appeal hearing against a ruling that it must sell Stansted airport, as well as either Glasgow or Edinburgh airport.

BAA has already sold Gatwick for £1.5bn to US-based investment fund, Global Infrastructure Partners.

“BAA has delivered good results and we have strengthened our financial position through refinancing of nearly £2bn of debt,” said chief executive Colin Matthews.

“The outlook for the remaining months of the year is positive.”

BAA – which is majority-owned by Spanish firm Ferrovial – operates the airports at Heathrow, Southampton and Aberdeen, as well as Stansted, Glasgow and Edinburgh.

The company handles about one million flights and 110 million passengers each year.

Earlier this week, owner Ferrovial said it was planning to sell a 10% stake in BAA.

This article is from the BBC News website. © British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.

The Disappeared

Mark SimpsonBy Mark Simpson

Geoff KnupferGeoff Knupfer has been working on a number of the ‘disappeared’ cases in recent years.

The retired detective leading the coastline search for republican murder victim Peter Wilson was also involved in the search for the bodies of the Moors murder victims in England.

Geoff Knupfer served with Greater Manchester Police for 30 years before becoming a senior investigator in the search for Northern Ireland’s so-called ‘disappeared’.

In the 1980s, Mr Knupfer helped to lead the search for the bodies of the victims of the Moors murderers, Ian Brady and Myra Hindley.

He also heard Hindley’s confessions to a number of the murders.

Brady and Hindley buried the bodies of their young victims on the remote Saddleworth Moor, between Manchester and Leeds, in the early 1960s.

The body of one of their victims, 12-year-old Keith Bennett, has never been found.

Mr Knupfer, a retired detective chief superintendent, has been working on a number of the ‘disappeared’ cases in recent years.

He is now in charge of the search in County Antrim for the remains of 21-year-old Belfast man Peter Wilson, who died in August 1973.

The IRA was accused of killing him, but until now there were no clues as to where his remains were buried.

Mr Knupfer and his team from the Independent Commission for the Location of Victims’ Remains recently received a tip-off, and are now carrying out an inch-by-inch search of the north end of the beach at Waterfoot in County Antrim.

Speaking at the digging site, he reflected on the search for the Moors murder victims.

He told the BBC: “The desire of the families is absolutely clear in all of these cases. They want closure, and they want somewhere to grieve. They want a Christian burial – and a grave to visit.”

Techniques have improved since the 1980s when he was involved in the search for the Saddleworth Moor victims.

“Those really were the early days of using archaeology as an investigative tool in the UK,” he said.

“We have learned an awful lot in the intervening period.

“As someone once admirably described it, we’re not looking for museum exhibits. We’re actually looking for human remains to return to a family.”

The process now involves ground-penetrating radar, forensic archaeology, geophysics and geochemistry.

Readings and measurements from the beach at Waterfoot are being fed into a computer network which analyses the data, and tries to pinpoint the best places to dig.

Under Geoff Knupfer’s instructions, full-scale digging of the site will not begin until the initial assessment of the area is completed next week.

The family of Peter Wilson have been told that the process could be quick or take a very long time.

And just like the family of Keith Bennett in England, they know it could all end in huge disappointment.

Nonetheless, the presence of an experienced investigator like Geoff Knupfer has given them grounds for hope.

This article is from the BBC News website. © British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.

World’s weirdest migration?

Northern bald ibis following a microlight (Team Waldrapp)

Sky high: The BBC joins Dr Johannes Fritz and his flock on a leg of their odd migration

“Yes, people think we’re crazy,” says Johannes Fritz, with a wry smile.

And surveying the scene, it is easy to see why.

We are in a playing field, in a small village in Austria, close to the Slovenian border.

In it stands a makeshift camp, with all the usual outdoors paraphernalia.

But it is the large aviary, containing 14 northern bald ibis and two human “foster parents” who are gently tending to their avian flock that really draws your attention.

That, and the microlights parked nearby.

For the past couple of days, this unassuming spot has been home to the Waldrapp team, “Waldrapp” being another name for the northern bald ibis.

But the group will not be staying here for long: they are part-way through a month-long effort to take these birds on a 1,300km flight from Germany to Italy.

However, this is no ordinary migration. The scientists are teaching the birds their route by getting them to follow a microlight.

Building trust

The project forms part of a wider conservation plan to save this critically endangered bird, explains Dr Fritz, leader of the Waldrapp team.

Northern Bald IbisThe northern bald ibis has not fared well in the wild

The northern bald ibis was once common throughout Europe, northern Africa and the Middle East.

But today, because of habitat loss and hunting, it has vanished from Europe, leaving diminished populations in Morocco, and just a handful of these distinctive birds in Syria.

Along with other groups around the world, the Waldrapp team is looking into the feasibility of reintroducing birds born in captivity into the wild.

But it is not as simple as opening a cage and setting them free.

Without any knowledge of their migration route, which is usually passed on by their parents, the zoo-born birds cannot survive.

Foster parent with northern bald ibisThe foster parents spend all day in the aviary with the birds

So, inspired by a similar project in America called Operation Migration, the scientists teach them their flight plan instead.

But it is a time-consuming process. It begins in spring. As soon as the birds hatch, they are introduced to their new human foster parents.

Then for the next few months, the human stand-ins spend almost every waking hour with the birds, feeding them, grooming them and playing with them.

Sinja Werner, one of the two foster parents in this year’s team, says: “We try to be their parents, as best as we can. It’s important that they trust you.”

Finally, this bond becomes so strong that the birds are willing to follow their parents anywhere. Even if they are sitting in a microlight.

Extreme schemes

While no doubt expensive, people-power heavy and time intensive, the Waldrapp project forms part of a growing movement that is taking conservation further than it has ever gone before.

Gone are the days when saving the flora and fauna was just about safeguarding habitats and putting species protection plans into place.

“Species are so low in numbers that the only way to deal with their survival is through more intervention”

Professor John Fa Durrell Wildlife Conservation Trust

Thanks to the fact that we are in midst of the biggest extinction crisis since the dinosaurs were wiped out, some researchers are saying we have to go further.

As well as concentrating on the traditional methods, they claim that we need to invest in and embrace more extreme, more experimental approaches, from hands-on reintroduction programmes like these, to shifting species around the globe and even cloning.

Professor John Fa, director of conservation science at Durrell Wildlife Conservation Trust, says: “We are talking about over 6,000 species under threat, we are talking about pollution increasing, we are talking about habitat fragmentation, we are talking about invasive species. There are many, many threats and these threats are still there.

“In some situations, species are so low in numbers that the only way to deal with their survival is through more intervention, and I think it is pushing us with coming up with more innovative ideas, it is pushing us into coming up with extreme ideas.”

And this project certainly fits the bill. The next morning, we get to witness the team in action.

Northern bald ibis with microlight (Team Waldrapp)The idea is to get the birds to follow the foster parent in the microlight – but it does not always work

As dawn breaks, the camp emerges from the darkness into a hive of activity, getting ready for a planned 200km flight that should take the team across the border into Slovenia.

The final preparations are made, and foster parent Sinja takes one last look at her birds before climbing into the microlight.

With a quick burst of speed, it powers across the dewy meadow before gliding up into the air, the fog-drenched countryside becoming ever more distant below.

Northern bald ibis with microlight (Team Waldrapp)

The aviary opens, and the birds also take to the skies, encouraged by their adoptive mother who repeatedly yells into her loudspeaker: “Here Wileys, come come”.

But, it soon becomes clear that the “Wileys”, an affectionate nickname for the birds, need a bit more convincing.

Every now and again the foster parent’s efforts seem to be working, and the birds gather in a tight V-shaped formation behind the aircraft.

But moments later they scatter, accompanied by increasingly desperate yells from above, pleading with them to come back.

This bizarre mid-air procession continues back and forth for the next 90 minutes, but today, just like naughty children, the birds simply will not do what they are told.

Finally, the team calls it a day, landing a measly 10km from where they set off.

Back on track

A few weeks later, Dr Fritz gets back in touch.

Foster parent with northern bald ibisThe team travelled only 10km along their planned route

After this early setback, he said, the birds started to behave, eventually completing their 1,300km migration and arriving in Italy in record time.

He said: “The migration 2010 was fantastic and extraordinary.

“For the first time, the flight speed and the flight distances are fully comparable with that of the wild migrating birds.”

With the migration now complete, this flock now have their “flight plan” in place, hopefully allowing them to make their own unassisted migration back to Germany when the time comes for them to breed.

But whatever the future holds for these birds, one thing is certain: these kinds of hands-on conservation efforts are far from easy – or predictable.

This article is from the BBC News website. © British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.

Assassin bug mimics spider prey

Assassin bug (Image: Anne Wignall)The assassin bugs’ behaviour is known as aggressive mimicry, say the authors

Scientists have described how a species of insect lures spiders by mimicking prey caught in webs.

Related stories

Assassin bugs plucked the web’s silk threads that replicate the vibrations of a fly or other insect, causing the fooled spider to head towards the bug.

Once within reach, the bug slowly tapped the spider with its antennae before lunging and stabbing the lured arachnid with its sharp snout.

The findings appear in the journal Proceedings of the Royal Society B.

The team from Macquarie University, Australia, said the behaviour – known as aggressive mimicry – was one of two strategies employed by the bug (Stenolemus bituberus) to trap its prey.

“To a spider, the vibrations generated by bugs resemble small or exhausted prey”

Dr Anne Wignall and Dr Phil Taylor Macquarie University

The other involved “stalking” spiders, where the assassin bug slowly approaches the unsuspecting victim until within striking range.

The researchers, Drs Anne Wignall and Phil Taylor, explained that the bug exploited web-building spiders’ use of vibrations to detect and locate its prey.

“However, reliance on vibratory cues and predictable responses leaves web-building spiders vulnerable to predators that aggressively mimic prey stimuli to gain control over their behaviour,” they wrote.

Bad vibes

In their study, the pair set out to compare the responses of spiders to the presence of prey in their webs with the arachnids’ response to the assassin bugs’ behaviour.

“Other vibrations in spider webs include mates and debris, and these were potential models for aggressive mimicry,” they observed.

“Hence, we also compared spider behaviour in response to courting males and leaves falling into the web.”

In their results, the team noted that there were “significant differences” to the various sources of vibrations.

They found that the spiders did not tend to respond to leaves falling on the webs, and female spiders responded to males by “entering a characteristic copulatory position”.

But how spiders responded to the bugs was extremely similar to how the spiders responded to prey, they observed.

“To a spider, the vibrations generated by bugs resemble small or exhausted prey.

“The responses of spiders to prey in the web were occasionally characterised by a direct and rapid approach towards prey without pause (reaching it within one second).”

But, they explained: “This response was.. observed towards bugs or other sources, and may be elicited by the presence of higher frequency and amplitude vibrations in the struggles of prey.”

However, spiders can be a formidable opponent for the assassin bug if they move quickly across the web to the potential predator.

“We have observed bugs being counter-attacked, killed and eaten by the spider they were hunting,” they added. “This risk may be considerably increased when the spider approaches rapidly and without pause.

“Bugs, hence, appear to aggressively mimic a broad class of prey-like vibrations that are effective at soliciting approaches but are also unlikely to elicit highly aggressive, dangerous responses.”

This article is from the BBC News website. © British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.

Councils uncover £135m of fraud

A housing estate in Derbyshire The commission says tenancy fraud has the potential to do the most damage

Almost 120,000 frauds costing £135m were uncovered by English councils last year, the Audit Commission has said.

Its annual fraud survey found 63,000 false benefit claims, and estimated that 50,000 properties worth £2bn had been illegally sub-let or occupied.

Dishonest claims for the 25% single person council tax discount were up and there were also 4,000 fraudulent uses of disabled parking badges, it added.

The quango warned that local government job cuts may weaken fraud controls.

‘Minute scale’

Its survey – entitled Protecting the Public Purse – revealed that false benefit claims were the most prevalent type of fraud against local authorities.

But it said tenancy fraud – where people live in council houses to which they are not entitled, or illegally sub-let them – has the potential to do the most damage.

Local government correspondent Greg Wood said that, in terms of total council spending, the scale of the detected fraud was minimal.

The commission is one of 192 public bodies being abolished by the coalition government, which said its cull of quangos would improve accountability and cut costs.

The annual survey of how much fraud is costing local taxpayers will be discontinued as a result.

This article is from the BBC News website. © British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.

Canadian revelled in US killing

In an illustration from a courtroom at Guantanamo Bay, Cuba, Omar Khadr is comforted by his legal teamOmar Khadr, in a courtroom illustration from Guantanamo Bay, may be sent to prison in Canada

Convicted militant Omar Khadr was proud of having killed a US soldier with a grenade, a military tribunal has heard.

Khadr, who pleaded guilty at Guantanamo Bay to terror charges on Monday, also told his US interrogators where to find bombs he had planted in Afghanistan.

The revelations came during the sentencing phase of his tribunal.

The Canadian is the fifth Guantanamo inmate to be convicted. Caught in 2002 aged 15, he reportedly may face up to eight years in jail under a plea deal.

Related stories

The US war crimes tribunal at the Guantanamo Bay detention centre was told Tuesday that Khadr, now 24, consoled himself during hard times in his years of imprisonment with recollections of the 2002 grenade attack that killed a US soldier in Afghanistan, Reuters reported.

“Khadr indicated that when he would get pissed off with the guards at Bagram, he would recall his killing of the US soldier and it would make him feel good,” the court heard in Khadr’s stipulation of guilt.

However, using information gleaned from interrogations of the young prisoner, US forces were able safely to disarm 10 roadside bombs Khadr had admitted to planting, the court learned.

Khadr pleaded guilty to five charges against him, including conspiracy with al-Qaeda terrorists and murder in violation of the laws of war.

Khadr’s defenders say he was a child soldier forced by his family to fight. He grew up in Canada, Pakistan and Afghanistan and is the son of an alleged al-Qaeda official who was killed in 2003.

They say he was a boy intimidated by “bad men” who ordered him into battle.

The US is the first country since World War II to prosecute a person at a war crimes tribunal for actions allegedly committed as a juvenile.

A seven-member military panel is to determine Khadr’s sentence.

According to media reports, he faces up to eight more years in prison in addition to the eight he has already served. He could also be returned to serve his sentence in his native Canada.

This article is from the BBC News website. © British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.

Fatal bug outbreak worries Brazil

Brasilia's Base Hospital where 3 patients died from superbacteria KPC on 9 October 2010Hospital staff have been told to take measures to prevent the spread of KPC

Eighteen people have died in the Brazilian capital after contracting a hospital superbug.

They were infected with bacteria which produce the enzyme Klebsiella pneumoniae Carbapenemase (KPC), which renders most modern antibiotics ineffective.

It tends to infect hospitalised people whose immune system is already weakened, and those taking antibiotics.

Health officials say 183 people have been infected in Brasilia.

The number of those carrying the bacteria has risen sharply over the past three weeks, but a spokeswoman for the capital’s health authority said the increase could be due to more rigorous testing.

KPC-producing organismsInfections are hard to treatVery few antibiotics are effectivePatients on broad spectrum antibiotics are most vulnerableOrganisms are easily transferred from patient to patientHealthy individuals are not at riskStrict hand hygiene can prevent the spread of KPC

Source: Johns Hopkins Hospital, Maryland, US

A similar outbreak is being reported in hospitals in Chicago, in the United States.

Denise Cardo, an official with the Center for Disease Control in the US, said she had seen an increase in hospital infections in recent years.

“There is no need to panic, but there is a need for a call for action,” she told the Associated Press news agency.

The bacteria were first identified in the United States in 1999 and studies suggest they kill 40% of the people they infect.

Brazilian health authorities think that the indiscriminate use of antibiotics could have contributed to the spread of the bacteria.

They said they would bring in new regulations to prevent the sale of antibiotics without prescriptions.

This article is from the BBC News website. © British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.

Too scared for home

Displaced boy returning to Mukhtar camp with his shoppingLocal people are caught in fighting between the Taliban and coalition forces

Seven months after a Nato and Afghan army operation ended in Helmand’s Marjah district, about 15,000 refugees from the area are still hesitating to return.

They are fearful of roadside bombs, Taliban remnants not removed by the Nato operation, and continuing battles between insurgents and coalition troops.

Marjah’s displaced families live in poorly-built mud houses in the Mukhtar camp for internally displaced people.

The camp – situated around 6km (3.7 miles) from Helmand’s provincial capital Lashkar Gah – houses tens of thousands of families displaced by war.

The displaced people arrived in the camp following a massive anti-Taliban operation by US, British and Afghan troops in Nad Ali and Marjah districts in February 2010.

Mirza Muhammad

“We can’t even take aid or jobs from the government or Americans because the Taliban will target us”

Mirza Muhammad, Mukhtar camp

Marjah was for years a Taliban haven, from where they planned attacks in other parts of Helmand province.

A number of families from Marjah have gone back after the operation ended but many of them are still waiting for the situation to improve.

”They have not returned for many reasons which include threats, insecurity and unemployment,” says Niamatullah Ahmadi, provincial head of Afghanistan’s Red Crescent Society.

Those who fled their homes say that initially they hoped to return “within a few days”.

“But there is no hope of going back until one side or the other is in complete control,” said 19-year-old Sayed Ahmad.

The Afghan government and the US military says it has already started fulfilling its pledge to establish the rule of law and restore long-vanished public services in the town.

Work continues on building offices and schools but winning people’s confidence still seems to be a challenge.

A number of families have left the town and the surrounding villages in recent months.

Water pump in Mukhtar campMukhtar camp has only the most basic facilities

”We left Marjah a couple of months ago because each side was blaming us for supporting the other,” said 28-year-old Mirza Muhammad, who lives in Mukhtar camp.

”We can’t even take aid or jobs from the government or Americans because the Taliban will target us. They don’t allow us to work with the government.”

Afghan and foreign troops are now permanently based in the town of Marjah.

The Taliban also show their presence by regularly carrying out attacks.

”The Taliban once fired at security forces from a place near our house and the police came and arrested me saying I was a Talib,” says Sayed Ahmad, 19, who now lives in Mukhtar camp.

”But luckily the elders got involved, told the police I was not a Talib. Now my father doesn’t want me to go back.”

However, Helmand provincial governor Gulab Mangal paints a different picture.

”There is a 250-strong trained local police force which keeps the town secure. The town of Marjah is completely secure,” he said.

Yet despite the influx of thousands of Afghan and foreign troops, Helmand remains one of the most dangerous – and the biggest opium-producing province – in Afghanistan.

Child in Mukhtar campThe camp has a high number of children

”Terrorism is the biggest problem. People are being threatened in remote areas and developmental projects are destroyed,” says Mr Mangal.

”There can be areas in all districts which are controlled by the Taliban. But we are trying to bring both physical and psychological security and this will take time.”

Nad Ali district – also the focus of Nato’s Operation Moshtarak – seems to be doing better in terms of security than Marjah.

The condition of governance has improved there and members of private organisations in the district say they have witnessed noticeable progress.

”Security has improved a lot,” says Nad Ali’s district governor, Habibullah.

”The Taliban still control around 20% of Nad Ali district, mainly in rural areas, but we’ll expand the area of our control soon.”

According to Afghan Red Crescent officials, Marjah had an estimated population of 70,000 before the February military operations.

”Around 50,000 of them left Marjah during the operation hoping that the situation would get better soon,” says Niamatullah Ahmadi.

Many fled from Marjah with only a few possessions, leaving homes, farms and livestock behind in the hope the fighting would end quickly.

”I sold my sheep and chickens to find some money to pay for renting a car to get to Mukhtar camp from Marjah,” said 60-year-old Shah Gula.

”There were attacks and the Taliban would come to fire from our roofs. I was worried about the life of my children.”

A six-year-old girl, Khatima, is also waiting in the camp for the time when it will be safe to go home.

”There was fighting and firing, I ran and hid in room. I was scared and crying,” she said.

Girl in Mukhtar campHelmand remains one of the most dangerous provinces in Afghanistan

In addition to Afghan security forces, there are nearly 10,000 British troops in Helmand province and in recent months they have been joined by US soldiers, who will eventually replace them.

Officials accept that three of Helmand’s 13 districts – Washir, Baghran and Deshu – are still fully controlled by the Taliban.

Many other districts are partly controlled by them. The overall picture seems to be that the government controls district centres while the Taliban rules over rural areas.

According to the provincial governor, plans are afoot to change this balance with an operation due to be launched in Washir district “in the near future”.

But this is of little consolation to the displaced of Marjah.

Map

This article is from the BBC News website. © British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.

Speed freaks

Aerial view of Ferrari World Abu Dhabi, a Ferrari themed amusement park, in Abu Dhabi September 27, 2010Abu Dhabi’s Ferrari World will be the largest indoor amusement park in the world

Climb aboard the world’s fastest rollercoaster. Be prepared to reach speeds of up to 240 km/h (149mph) and enjoy a feeling similar to a Formula One racing driver.

Related stories

That is the hype from those behind Abu Dhabi’s Ferrari World, the largest indoor theme park in the world, which opens on Wednesday.

The Formula Rossa rollercoaster boasts acceleration from 0 to 60mph (97km/h) in 2 seconds, and takes the title from the Kingda Ka in New Jersey, US, which reaches speeds of 128mph.

But could you stomach such speeds? Why are some people so risk-averse, while others seek to find the highest, most adrenaline-filled activity they can find?

“Thrill is the very stuff of life. It’s what motivates us to stay alive”

Brendan Walker Thrill expert

“We are all predisposed in some way to seek thrill,” says Brendan Walker, an expert who set up a Thrills Laboratory.

“Thrill is the very stuff of life. It’s what motivates us to stay alive and it rewards us to evade danger, or to have fantastic sex, and rewards us when we feel extreme hunger and thirst.”

The response is a series of chemical reactions in the body, he says, with “thrill” essentially being the release of adrenaline and dopamine.

“The closest man-made substance is cocaine, which is why it is so addictive and why some people get more addicted to thrill,” he explains.

FIVE FASTEST

1. FORMULA ROSSA, 149mph; Formula World, Abu Dhabi

2. KINGDA KA: 128mph; Flags Great Adventure, New Jersey, US

2. TOP THRILL DRAGSTER, 120mph; Cedar Point, Ohio, US

3. DODONPA, 107mph; Fuji-Q Highland, Yamanashi, Japan

4= TOWER OF TERROR, 100mph; Dreamworld, Queensland, Australia

4= SUPERMAN THE ESCAPE, 100mph; Six Flags Magic Mountain, Valencia, California, US

5. STEEL DRAGON 2000, 95mph; Nagashima Spa Land, Nagashima, Japan

Some people, he says, are genetically more predisposed to the effects of dopamine – a link found by scientists in the 1990s who found the D4DR gene.

The difference lies in the number of repeats of the sequence of this D4DR gene: the larger number of repeats, the less receptive a person is to dopamine.

Although the popularity of theme parks has soared in recent years, the concept of such thrill-seeking is nothing new.

The rollercoaster has been around for centuries – it is believed their roots are found in Russian ice slides, amusement devices developed in the 17th Century, consisting of carts which were pushed down wooden slopes.

These are said to have inspired the first rollercoaster in 1884, in Coney Island in the US – a ride which is down in the history books as a great success.

Technological advances brought steel coasters, instead of wooden ones, but some enthusiasts said the unpredictability of wood gave traditional ones an extra edge.

Paul Delvecchio, an actor, takes a ride aboard the Big Thunder Mountain Railroad roller coaster in the Magic Kingdom on October 22, 2010 in Lake Buena Vista, Florida. Rollercoasters are getting faster and higher

Some, such as Professor Marvin Zuckerman, claim there is a particular personality that goes with the enjoyment of theme park rides.

In a renowned 1971 study, Prof Zuckerman concluded that being a “sensation-seeker”, as he calls it, means you are far more likely to take risks for novel experiences.

Such people likely enjoy high-intensity rock music, watch sex and horror films, travel to exotic places, and party, as well as take part in adventurous activities and extreme sport.

But how far can we go? Rollercoasters may create a perception of feeling like you are in danger, but how much faster and extreme can you go without actually being open to injury?

“Speed isn’t exciting by itself, so it’s the way you get to that speed that’s exciting”

Dr Alberto Minetti Professor of Physiology

Studies show that extreme gravity can have an impact on the flow of blood to our brains and eyes, but design checks on rollercoasters ensure this is kept within safe limits.

Alberto Minetti, a professor of Physiology in Milan, Italy, says that normal people can sustain a G-force (gravitational force) of 3, although levels above that are safe, depending on duration.

For the Formula Rossa, the G-Force – in other words, its acceleration relative to free-fall – is 1.7Gs.

“Everybody knows that it is a scary experience but it is a safe experience,” Prof Minetti says.

To protect passengers’ eyes, Ferrari World says it will require passengers to wear goggles – something which Prof Minetti says is important.

“When you are travelling at 240km/h, even dust that is not normally harmful is. Even dust like when you are sitting at your desk, it’s like a bullet in a way,” he says.

He says that constant speed will not have the same physiological effect on the body as varied movement.

“Speed isn’t exciting by itself, so it’s the way you get to that speed that’s exciting”.

“If the roller coaster is going from 0-100km/h in 2 seconds, it’s that excitement,” he says.

So while the high speeds of Ferrari World and Kingda Ka are headline-grabbing, are the fastest rollercoasters really the best for thrill-seekers?

Photo taken on March 18, 2010 shows visitors riding on the "Battlestar Galactica roller-coaster" at Universal Studios Singapore theme park during its opening day in SingaporeExperts say creativity is the key to an enjoyable rollercoaster, not just speed

Andy Hine, chairperson of the Roller Coaster Club of Great Britain (RCCGB), says generally “speed is important but not the be-all and end-all”.

“What they have to be is start being more clever,” he says.

He cites Nemesis, a ride at Alton Towers, where “you’re only inches from rocks so you get the impression you’re going to get your legs ripped off”.

Indeed, as human beings, we like variety, Mr Walker points out.

You could stick someone on the end of a rope and swing them round very fast for a long time, but that person might only have fun for the first 3 seconds, he says; it is the creativity in rollercoaster design which is key, not the height or speed.

“A rollercoaster choreographer is more like a musician or conductor and sort of leads the rider through his score, script,” he says.

“Ride sensation is only one part. There’s also the visual spectacle,” he says.

In his opinion, the future is something more theatrical, something that is able to entertain the mind as well as the body.

But for the “sensation-seekers” of the world, will it ever be enough?

This article is from the BBC News website. © British Broadcasting Corporation, The BBC is not responsible for the content of external internet sites.