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Ancient water source
vital for Australia |
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By Michael Perry in Sydney _ |
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People stand on a platform
overlooking an
underground spring known as The Bubbler
Mound Spring which is fed by the Great
Artesian Basin in South Australia. — Reuters |
AN
ancient underground water basin the size of Libya holds the key to Australia
avoiding a water crisis as climate change bites the drought-hit nation.
Australia’s Great Artesian Basin is one of the largest artesian groundwater
basins in the world, covering 1.7 million sq kms and lying beneath one-fifth
of Australia.
The basin holds 65 million gigalitres of water, about 820 times the amount
of surface water in Australia, and enough to cover the Earth’s land mass
under half a metre of water, says the Great Artesian Basin Coordinating
Committee. And it is slowly topped up with 1 million megalitres a year as
rain filters through porous sandstone rock, becoming trapped in the
underground basin.
“There is probably enough water in there to last Australia’s needs for 1,500
years, if we wanted to use it all,” says John Hillier, a hydrogeologist who
has just completed the Great Artesian Basin Resource Study.
But he and other
experts warn that access to the basin’s water supply is under threat from
declining artesian pressure, which forces the water to the surface via bores
and springs. |
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If artesian pressure falls too far, due to excessive extraction of water,
the ancient water source will be unreachable, except through costly pumping.
Lying as much as two kms below ground, some parts of the basin are three km
deep from top to bottom. The basin was formed between 100 and 250 million
years ago and consists of alternating layers of waterbearing sandstone
aquifers and non-waterbearing siltstones and mudstones.
Basin water is extracted through bores and is the only source of water for
mining, tourism and grazing in Queensland, New South Wales and South
Australia states, and the Northern Territory. The underground water spawns
A$3.5 billion (US$2.4 billion) worth of production a year from farming,
mining and tourism, says the Great Artesian Basin Co-ordinating Committee.
The mining and petroleum industry extracts 31,000 megalitres of basin water
a year, which is used in production or pumped out as a by-product of mining,
and is vital for future expansion. Mining giant BHP-Billiton draws about
11,680 megalitres a year from the basin to operate its Olympic Dam gold,
copper and uranium mine in South Australia. It would treble water usage
under a plan to double production, with the extra water drawn from the basin
and a new desalination plant.
Swiss-based miner Xstrata Plc is looking at the basin as a water source for
what would be Australia’s biggest open cut thermal coal mine, at Wandoan in
Queensland, which would supply 20 million tonnes a year, with a mine life of
30 years. But the pastoral industry is by far the biggest user, taking
500,000 megalitres a year to water some of Australia’s most productive
farmlands. Angus Emmott runs a cattle property called Moonbah in central
Queensland and relies on basin water in times of drought.
Basin water threatened
“The bores underpin the social and economic value of this huge inland area
of Australia where there wasn’t permanent fresh water,” said Emmott. “With
climate change, we will be more reliant on the Great Artesian Basin, so
we’re morally obliged to make the best use of that water...so we don’t waste
it.”
Since it was first tapped in 1878, an estimated 87 million megalitres has
been extracted and up to 90 per cent of it wasted.
As a result of falling water pressure, more than 1,000 natural springs have
been lost and one-third of the original artesian bores have ceased flowing.
The extraction of ancient basin water into the atmosphere also contributes
to Australia’s greenhouse gas emissions, releasing 330,000 tonnes of CO2
annually. A 15-year Great Artesian Basin Sustainability project started in
1990 aims to protect the water supply and the hydraulic pressure necessary
to access it.
Today, there are still some 3,000 bores which pour water into 34,000 kms of
open bore drains, with 90 per cent of the water evaporating in the outback
heat. But more than 1,052 bores have now been controlled and tens of
thousands of kilometres of open drains removed and pipelines laid, saving
272 gigalitres of water a year.
Farmers are now fencing off bores and using mobile telephone, satellite and
computer imaging technology to control livestock access to bores and control
bore flows. “Bores and springs that had previously ceased to flow have begun
to flow again. It’s a huge change to land management and has allowed better
pasture and stock management,” said Emmott. “With the capping and piping
programme you don’t get the bogging of domestic animals, you don’t get the
maintenance cost of drains and you don’t get soil salination,” he said.
Sustainable usage
Farmers and scientists say it is crucial that more work is done to avoid a
water crisis in the Great Artesian Basin as there will be greater demand on
basin water in the future. “It is absolutely crucial for the existence of
communities that it is looked after,” said Emmott. “We realise there is a
lot there, but we need to look after it very carefully because it needs such
a huge time for recharge that if we lose it now it will not recharge in
human lifetimes.”
A A$17 million long-term sustainability report on the Great Artesian Basin
announced this month will look at how to ensure water for future mining,
pastoral and environmental development. The global commodities boom in
recent years has seen mining activity over the basin increase dramatically
and authorities expect the mining industry’s extraction will continue to
rise.
“An expansion in exploration and mining activities in the area will place
increased demands on securing groundwater allocations for economic
development,” said Andy Love, from Flinders University in Adelaide, who will
lead the study. “Clearly a balance between development and environmental
protection needs to be achieved. However, this is not possible without
increased knowledge about the amount of groundwater that can be safely
extracted,” said Love. — Reuters |
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Seeking happiness as a street
artist |
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By Frederic J Brown in Beijing
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XI
Fu’s name in English means Seeking Happiness and the Chinese street artist
who has almost no use of his hands remains firmly on that path despite his
handicap. Xi, 30, was dropped by a nurse shortly after birth, causing the
disability which has given him trouble walking as well as the problems with
his hands.
He went to school for three years before being forced to drop out because
the school found it too time-consuming to teach him, even though he had
become as adept at using his toes and feet as others using their fingers and
hands. When he was 18, his mother took him to an arts centre and asked about
painting lessons for her son.
Seeing that Xi was smart and confident as well as skilled, the teacher was
sure he could help and explained to Xi that many people made a living from
art. After three years of one-on-one training, the teacher declared it was
time for the then 21-year-old “foot artist” to hit the streets and earn a
living. |

Street artist Xi Fu, who’s name
means seeking happiness, attracts a crowd while writing
calligraphy with his feet in Beijing. — AFP |
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For the past nine years Xi has roamed across the Chinese capital, writing
calligraphy and painting flowers with his feet. In a good month he can earn
3,000 yuan ($430), more than many Beijing office workers, selling his works
for 100-200 yuan each. While Xi said he has a passion for his work, he says
it is not an easy life.
Often he sets up his paint brushes and scrolls in one of the city’s many
pedestrian underpasses, though he must dodge police who would force him to
move. He often also comes across insensitive and rude people, but said he
accepts his fate. “It doesn’t matter if you are normal or disabled, everyone
has his or her bad moments.” In his more private moments, he admits, there
is inner pain as he believes his disability makes it difficult for him to
find a wife or girlfriend.
But Xi remains cheerful, pragmatically accepting his lot in life and
confessing to feeling uncomfortable if he thinks people are pitying him.
“I’d like to find a girlfriend, but who wants a boyfriend who is disabled?”
he said. “Women like you for your money, so even if you are disabled but
have money maybe a woman can like you, but if you are disabled and poor
there is no chance.” He believes that finding a partner who is also disabled
could become problematic when they are older and unable to help one another.
As he lives with his parents, who own their home in a rural suburb south of
Beijing, the money he earns enables him to have fun and socialise with his
performance-artist friends. He particularly likes relaxing drinking soda —
an act he delicately performs with his feet, pouring soda from a bottle held
in one foot into a glass held in the other. He also loves music and can
sometimes be found at local bars in the heart of Beijing’s ancient Drum and
Bell Tower neighbourhood, drinking or dancing to live music by Chinese folk
and rock bands.
Xi said he overcomes his disability by living in the present, aware that he
can work to earn a living and thankful he has good friends. When asked what
he will do when one day he can no longer earn a living, he replied
defiantly: “I don’t want to think about that so much now. I’m not afraid and
only think about being happy.” — AFP
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All my films will star my son
Adhyayan: Shekhar Suman |
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Shekhar Suman and his 20-year-old son Adhyayan (left) |
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ACTOR
Shekhar Suman is not interested in talking about his 20-year-old son
Adhyayan’s reported affair with actress Kangana Ranaut. Instead, he talks
about how all the films made by his production house will star his son.
Shekhar launched his production company Windmill Entertainment in
association with UTV last year and is planning to produce television shows
and films.
“Hopefully, we will be producing a couple of films next year which will have
Adhyayan. In fact, all my films will have Adhyayan,” Shekhar said. “Every
producer who has an actor-son makes films for him. Rakesh Roshan does it for
his son (Hrithik) as well as many other producers. Why shouldn’t I?” he
asked.
Adhyayan, whose debut film Haal-E-Dil was a box office dud, will be trying
his luck again in Mahesh Bhatt’s Raaz. “His first film did not do well but
his performance was appreciated,” Shekhar said.Adhyayan’s reported love
affair with popular actress Kangana has been much talked about, but Shekhar
wants his son to concentrate on his career. He does not even see marriage in
the near future.
“Adhyayan is just 20. How can he get married? He has to go a long way,”
Shekhar said. Refusing to comment on their relationship, Shekhar said: “I
think all these personal questions need to be put to them and not me.”
Shekhar said he is confident that Adhyayan will get his due in Bollywood
after the release of Raaz and Jashn.
“2008 was not good, but 2009 will be good for him as the two films Raaz and
Jashn will be releasing in which he has done commendable work. And the
praise for his acting came from one of the most able directors of Bollywood
like Mahesh Bhatt, which means a lot,” Shekhar said.
Both films are being produced by Bhatt’s Vishesh Films.
As far as his own acting assignments were concerned, Shekhar said he was
working for a couple of films with Anand Mahendroo, who produced the hit
comedy show Dekh Bhai Dekh for Doordarshan in the early 1990s. “After
working with Anand Mahendroo for Dekh Bhai Dekh, I am doing two films for
him after a long time,” Shekhar said. “Besides, he is planning a film on
Dekh Bhai Dekh of which I will be an integral part.” — IANS
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Scientists show how
cauliflower,
cabbage combat breast cancer |
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Breast cancer, the second leading
cause of cancer deaths in women, can be protected against by eating
cruciferous vegetables
such as cabbage and near relatives of
cabbage such as broccoli and cauliflower |
EATING
vegetables like cauliflower and cabbage are known to prevent breast cancer.
But the mechanism by which the active substances in these vegetables inhibit
cancer cell proliferation was unknown — until now. Leslie Wilson, professor
of biochemistry at the University of California Santa Barbara (UCSB) and
Mary Ann Jordan, adjunct professor in molecular, cellular and developmental
biology, have shown how the healing power of these vegetables works at the
cellular level.
“Breast cancer, the second leading cause of cancer deaths in women, can be
protected against by eating cruciferous vegetables such as cabbage and near
relatives of cabbage such as broccoli and cauliflower,” said co-author Olga
Azarenko, a graduate student at UCSB.
“These vegetables contain compounds called isothiocyanates which we believe
to be responsible for the cancer-preventive and anti-carcinogenic activities
in these vegetables. Broccoli and broccoli sprouts have the highest amount
of the isothiocyanates. “Our paper focuses on the anti-cancer activity of
one of these compounds, called sulforaphane, or SFN,” Azarenko added. |
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“It has already been shown to reduce the incidence and rate of chemically
induced mammary tumours in animals. It inhibits the growth of cultured human
breast cancer cells, leading to cell death.” The paper was published in this
month’s journal Carcinogenesis. Azarenko made the surprising discovery that
SFN inhibits the proliferation of human tumour cells by a mechanism similar
to the way that the anti-cancer drugs taxol and vincristine inhibit cell
division during mitosis.
Mitosis is the process in which the duplicated DNA in the form of
chromosomes is accurately distributed to the two daughter cells when a cell
divides, said an UCSB statement. “SFN may be an effective cancer preventive
agent because it inhibits the proliferation and kills precancerous cells,”
said Wilson. It is also possible that it could be used as an addition to
taxol and other similar drugs to increase effective killing of tumour cells
without increased toxicity. — IANS
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World’s
largest ice Santa on show |
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CHINA’S
freezing northern city of Harbin is building what organisers say is the
world’s largest Santa Claus ice sculpture. The giant Father Christmas,
160 metres long and 24 metres high, centres on an enormous face of
Father Christmas, complete with flowing beard and hat. Its huge size and
unseasonably warm temperatures have made the job especially challenging,
said Tang Guangjun, one of the sculptors.
“It is even bigger and higher than last year’s, and more difficult. The
weather swings between warm and cold, so it becomes very wet and
slippery on the ice. It is very dangerous for us,” he told Reuters
Television.
Harbin, the capital of Heilongjiang province on the edge of Siberia, is
one of China’s coldest places. Winter temperatures can drop to below
minus 35 degrees Celsius. |

Visitors throng the Harbin park. — Reuters |
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Every year the city plays host to a world-renowned ice festival. But the
effects of global warming are taking a toll as the snow and ice now melt
more rapidly than in the past. Organisers said they had to artificially make
snow for the Santa Claus sculpture. Still, the sculpture has attracted
thousands of tourists from all over the country who want to enjoy a white
Christmas despite worries over the economic downturn.
Many said such tourism could help to boost the economy. “It can stimulate
the economy and consumption. When people feel happier, they will want to
spend more, so it will lift the economy of the city and even the country,”
said Li Qingsheng, a tourist from Beijing. Officials in Harbin remained
optimistic about the tourist outlook for the winter. An estimated 800,000
tourists, 90 per cent of them Chinese, were expected to visit the ice
festival, said Jia Yan, director of the local tourism bureau. The festival
traditionally runs from mid-December to early February.
— Reuters
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Fast food + nearby schools = fat kids |
YOUTH
who study just a short walk from a fast-food outlet eat fewer fruit and
vegetables, drink more soda and are more likely to be obese than students at
other schools, according to research published on Tuesday. The study, which
involved more than 500,000 adolescents at middle schools and high schools in
California, lends new fuel to a growing backlash against the fast-food
industry as studies suggest they contribute to the rising obesity epidemic
in the United States.
“We’ve basically discovered that kids who are going to a school that is near
a fast-food restaurant have a higher chance of being overweight and obese
than kids who are at a school that is not near a fast-food restaurant,” said
Brennan Davis of Azusa Pacific University in California, whose study appears
in the American Journal of Public Health.
US youth obesity rates have tripled since 1980, although they levelled off
this decade. The government says 32 per cent of US children are overweight
and 16 per cent are obese. Consumer groups have pushed for laws such as
July’s moratorium on new fast-food restaurants in certain Los Angeles
neighbourhoods, while the food industry often maintains that a lack of
exercise is more to blame.
The researchers said it is not yet clear whether their results apply to
other parts of the United States, and this should be studied further. But
their study adds to prior research showing that fast-food restaurants tend
to be clustered near schools. “We are actually making a connection between
fast food proximity to schools and obesity,” Davis said in a telephone
interview.
“Students who were exposed to nearby fast food have a higher level of body
mass index — they weigh more. They are more likely to be overweight and
obese,” he said. For the study, Davis and colleagues examined the
relationship between fast-food restaurants located within one half mile of
schools and obesity among middle and high school students in California.
They took weight and dietary information from a statewide school survey
between 2002 and 2005 and cross referenced the data with a database of top
fast food chains located near each school. “Overall, our patterns are
consistent with the idea that fast food near schools affects students’
eating habits, overweight and obesity,” Davis and colleagues wrote.
They also found that students whose schools were located near fast-food
restaurants eat fewer servings of vegetables and fruits, and drink far more
soda than students at schools not located near fast-food restaurants. The
study could not determine why fast-food restaurants near schools have such
an impact, but Davis said it likely goes well beyond access to burgers,
fries and tacos. “A nearby fast-food restaurant is really a hangout place
for people to socialise,” Davis said. — Reuters |
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