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CANBERRA, Oct. 15 (Xinhua) -- Prisoners and health experts on Saturday told national broadcasting network ABC News that they are concerned of a looming HIV epidemic in Australia's prisons.The warning came following a test report undertaken in August showed that 40 percent of inmates at a correctional center in Canberra of Australia tested positive to Hepatitis C.According to the head of the Alcohol and Drug Service based at St Vincent's Hospital in Sydney, Alex Wodak, roughly 25 percent of Australia's prison population are injecting drugs, and he is concerned about the risk of an HIV explosion in Australia originating in prisons."Were Australia to have an epidemic of HIV beginning among people who inject drugs, it is almost certain that it would begin in one of our prisons. So we are very exposed to this risk," he told ABC News on Saturday.The Australia Capital Territory state government has proposed a trial prison needle exchange program in Canberra's correctional center, and Paul Cubitt, who currently works at the Alexander Maconochie Center in Canberra, said he has never seen so many syringes in a jail."Under a controlled regime it will actually take those needles that currently exist within a correctional center out of the environment, and prisoners will be more willing to use a clean item under a level of anonymity which then protects them and protects staff," he said.Meanwhile, The Community and Public Sector Union 's national secretary, Nadine Flood, agrees action must be taken to curb prisoner drug use.Dr Wodak noted that prison needle exchange programs have been operating overseas for over a decade with ten countries provide inmates with clean needles, and said it is shameful Australian prisons are lagging behind.

WASHINGTON, Dec. 5 (Xinhua) -- NASA's Kepler mission has confirmed its first planet in the "habitable zone," a region where liquid water could exist on a planet's surface, the U.S. space agency announced on Monday.The newly-confirmed planet, Kepler-22b, is the smallest yet found to orbit in the middle of the habitable zone of a star similar to Sun. The planet is about 2.4 times the radius of Earth. Scientists don't yet know if Kepler-22b has a predominantly rocky, gaseous or liquid composition, but its discovery is a step closer to finding Earth-like planets.Previous research hinted at the existence of near-Earth-size planets in habitable zones, but clear confirmation proved elusive. Two other small planets orbiting stars smaller and cooler than Sun recently were confirmed on the very edges of the habitable zone, with orbits more closely resembling those of Venus and Mars.Kepler-22's star is a bit smaller than our sun, so its habitable zone is slightly closer in. The diagram shows an artist's rendering of the planet comfortably orbiting within the habitable zone, similar to where Earth circles the sun. Kepler-22b has a yearly orbit of 289 days. The planet is the smallest known to orbit in the middle of the habitable zone of a sun-like star. It's about 2.4 times the size of Earth."This is a major milestone on the road to finding Earth's twin, " said Douglas Hudgins, Kepler program scientist at the NASA Headquarters in Washington. "Kepler's results continue to demonstrate the importance of NASA's science missions, which aim to answer some of the biggest questions about our place in the universe."Kepler discovers planets and planet candidates by measuring dips in the brightness of more than 150,000 stars to search for planets that cross in front, or "transit," the stars. Kepler requires at least three transits to verify a signal as a planet."Fortune smiled upon us with the detection of this planet," said William Borucki, Kepler principal investigator at the NASA Ames Research Center who led the team that discovered Kepler-22b. "The first transit was captured just three days after we declared the spacecraft operationally ready. We witnessed the defining third transit over the 2010 holiday season."The Kepler science team uses ground-based telescopes and the Spitzer Space Telescope to review observations on planet candidates the spacecraft finds. The star field that Kepler observes in the constellations Cygnus and Lyra can only be seen from ground-based observatories in spring through early fall. The data from these other observations help determine which candidates can be validated as planets.Kepler-22b is located 600 light years away. While the planet is larger than Earth, its orbit of 290 days around a Sun-like star resembles that of Earth. The planet's host star belongs to the same class as Sun, called G-type, although it is slightly smaller and cooler.Of the 54 habitable-zone planet candidates reported in February 2011, Kepler-22b is the first to be confirmed. This finding will be published in The Astrophysical Journal.

MOSCOW, Oct. 3 (Xinhua) -- A Soyuz-2.1B rocket carried a Glonass-M navigation satellite into orbit early Monday after a two-day delay caused by high winds, a Russian Space Forces spokesman said."The launch of the booster rocket is as scheduled. The satellite Glonass-M was put into the orbit under control at 03:55 Moscow time (2355 GMT on Sunday)," said Colonel Alexei Zolotukhin.Zolotukhin told reporters that the rocket was launched at 0:15 Moscow time (2015 GMT, Sunday) from the Plesetsk Space Center in northern Russia.The Russian Space Forces said the launch was initially scheduled for Saturday but was postponed due to high winds.Glonass is the Russian equivalent of the U.S. Global Positioning System (GPS), which is designed for both military and civilian use. The system requires 24 operational and 2-3 reserve satellites in orbit to ensure global coverage.In December 2010, a malfunction of the booster resulted in a loss of three Glonass satellites.

SAN FRANCISCO, Oct. 14 (Xinhua) -- Google on Friday announced to shut down the highly-controversial social networking product Google Buzz, along with several other services in the coming weeks.On the company's official blog, Google announced the death penalty to its code search engine, Buzz, Jaiku which let users send updates to friends, the Google personalized homepage feature iGoogle, and the University Research Program for Google Search.The shut-downs came as part of Google's housecleaning effort announced in early September, in which the company said it will shut down a number of products and merging others into existing products as features."Changing the world takes focus on the future, and honesty about the past. We learned a lot from products like Buzz, and are putting that learning to work every day in our vision for products like Google+. Our users expect great things from us; today's announcements let us focus even more on giving them something truly awesome," said Google in the blog post.Google Buzz, a social networking and messaging tool integrated into Gmail service, has been widely criticized for privacy concerns and held back the search giant from expanding its businesses to the social networking space.After Buzz, Google launched Google+ in June, which has been receiving a good response and passed the 40 million user mark, the company's chief executive officer Larry Page said Thursday.

BEIJING, Oct. 27 (Xinhuanet) -- A new study shows that it's not simply a lack of willpower that explains weight regain but hormones keep one insisting on eating, a persistent biological urge. As any dieter knows, it's hard to keep weight off. Weight regain is a familiar problem for dieters. The research appears in Thursday's issue of the New England Journal of Medicine. To study what drives it, Proietto and his colleagues enrolled 50 overweight or obese patients in Australia in a 10-week diet program. On average, the participants lost almost 30 pounds in the 10 weeks - faster than the standard advice of losing a pound or two per week. Even so, they gained an average of 12 pounds back over the next year. The scientists checked the blood levels of nine hormones known to influence appetite - and found that even a year after the end of the weight-loss program, six of the hormones were still out of whack. People who regain weight should not be harsh on themselves, as eating is our most basic instinct, study author Joseph Proietto of the University of Melbourne in Australia said. It's better not to gain weight than to try to lose it.

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