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CANBERRA, Dec. 9 (Xinhua) -- Scientists from Australia's University of New England on Friday said they had discovered the remarkably fossil isa metre-long arthropod with excellent vision called anomalocaris from Emu Bay Shale of South Australia.The scientists reported their finding on the anomalocaris in thescience journal Nature this week.It is reported that anomalocaris is a fearsome ancient predator that swam in the Cambrian oceans 500 million years ago. The researchers said the presence of anomalocaris would have driven the development of protective adaptations in prey animals. Such an escalatory 'arms race' would have seen, for instance, the evolution of such adaptations in prey as shells, camouflage and burrowing into sediments. "It has been unbelievably frustrating being able to see eyes like these at fossil sites like the Burgess Shale (in the Canadian Rocky Mountains), but not have any details. It is really refreshing to have our ideas about these animals confirmed at last, " comments Simon Conway Morris, a palaeontologist at the University of Cambridge, the United Kingdom.The research team was led by paleontologist Dr John Paterson, of the University of New England. He said the most surprising discovery of anomalocaris is the huge number of tiny hardened lenses in each eyes."When you consider that a modern housefly, for example, has about 3000 lenses, it's pretty impressive that an animal half a billion years old already has remarkable vision like this," Paterson said in statement."The fact that each eye in anomalocaris would have had over 16, 000 lenses means it would have very, very good resolution."Paterson said the acute vision of Anomalocaris gave it a distinct advantage over competing predators and prey, as many Cambrian animals either had poor vision or were completely blind. Its acute vision rivals or exceeds that of most living insects and was probably comparable to predatory dragonflies today.He said their findings support the idea that compound eyes evolved very early on in arthropod evolution, before the evolution of jointed legs or hardened exoskeletons.The research team hopes they can find the more fossil remains of Cambrian creatures in the Emu Bay Shale.

ACCRA, Dec. 19 (Xinhua) -- A strange disease has hit inhabitants of the Amansie West District in the Ashanti Region of Ghana, near Kumasi, 270 km north of the capital, claiming two lives, health officials said here on Monday.Director of Public Health Dr. Joseph Amankwa told Xinhua that the disease, which had been identified as Laffa viral hemorrhagic fever, and had symptoms similar to those of malaria, caused victims to bleed to death.Dr. Amankwa said he received information about the infection over the weekend but indicated that no other details were made available."We are sending a team to the affected area to verify what the actual situation is to determine our next action. We are also liaising with the World Health Organization to gather enough data on the infections and soon information will be sent out to the public," he said.According to reports carried by local Joy fm radio station, the disease was the first of its kind in the country.The reports quoted health officials as saying infection was passed on from infected rodents like mice and rats and was highly contagious."About two months ago, a young man of 19 years came to our health center here and complained of malaria, so we treated him for malaria but suddenly, blood started coming from the nose, mouth, anus and the ears, and immediately he died," Municipal Director of Health in the Amansie West District, Dominic Brobbey told the radio station.He warned that although the situation was under control, there were no drugs to treat the disease in Ghana, and therefore urged government to expedite action to acquire the necessary drugs to prevent further deaths.

SAN FRANCISCO, Nov. 11 (Xinhua) -- Logitech, a provider of personal peripherals for computers and other digital platforms, said its production of Google TV was a "big mistake," giving a major blow to Google's aspiration to change the traditional TV experience, U.S. media reported on Friday.According to technology news site The Verge, at a recent analyst and investor meeting, Logitech chief executive officer Guerrino De Luca said the launch of Logitech Revue (with Google TV set-top box) last year was "a mistake of implementation of a gigantic nature."The project cost the company more than 100 million U.S. dollars in operating profit.He said the company had "brought closure to the Logitech Revue saga" and has "no plans to introduce another box to replace Revue" after the inventory runs out this quarter.The CEO also predicted that Google TV will have a chance sometime in the future, but it would be a "grandchild of Google TV " that would do it. Logitech has no plans to help make that happen.Launched during the holiday shopping season last year, the Logitech Revue with Google TV system was criticized for being pricey and unpolished although it gives consumers a streamlined experience of traditional TV content and online media. In August, Logitech slashed the price from 249 dollars to 99 dollars.Last month, Google introduced a redesigned Google TV after sales of the first version did not meet expectations.In April, Logitech reported that Revue with Google TV set-top box and related gear only brought five million dollars in sales during the first quarter of this year, 72 percent less than the company had expected.However, support from some leading TV manufacturers may still help Google fulfill its TV plan. A Bloomberg report said Friday that Google and LG Electronics, world's second-largest TV manufacturer, may unveil a television using the search giant's software at the upcoming Consumer Electronics Show in Las Vegas.Samsung, world's largest TV manufacturer, said in February that it was in discussions with Google to develop a TV product.

WASHINGTON, Dec. 12 (Xinhua) -- British scientists have discovered a new way to target cancer through manipulating a master switch responsible for cancer cell growth. The findings, published Monday in the U.S. journal Cancer Cell, reveal how cancer cells grow faster by producing their own blood vessels.Cancer cells gain the nutrients they need by producing proteins that make blood vessels grow, helping deliver oxygen and sugars to the tumor. These proteins are vascular growth factors like VEGF -- the target for the anti-cancer drug Avastin. Making these proteins requires the slotting together of different parts of genes, a process called splicing.Scientists at the University of West England and the University of Bristol discovered that mutations in one specific cancer gene can control how splicing is balanced, allowing a master switch in the cell to be turned on. This master switch of splicing makes cancer cells grow faster, and blood vessels to grow more quickly, as they alter how VEGFs are put together.In experimental models, the researchers found that by using new drugs that block this master switch they prevented blood vessel growth and stopped the growth of cancers."The research clearly demonstrates that it may be possible to block tumor growth by targeting and manipulating alternative splicing in patients, adding to the increasingly wide armory of potential anti-cancer therapies," the authors said.

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