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SANYA, Hainan, Dec. 4 (Xinhua) -- The five BRICS nations intend to focus and work together on developing alternative energy sources.When Bu Xiaolin, vice governor of China's coal-rich Inner Mongolia autonomous region, spoke over the weekend in front of hundreds of BRICS delegates on regional energy strategies, she mentioned little of the fossil fuels that have long contributed to the region's growth.Like many other speakers at the 1st BRICS Friendship Cities and Local Governments Cooperation Forum, which ran from Dec. 1-3 in Sanya, Hainan province, she devoted large part of her speech to discussing wind and solar energy."Facing the prospects of running out of fossil energy and the related environmental issues, developing new energy is an inevitable choice," said Bu.The forum at this seaside resort over the weekend attracted hundreds of local governors, scholars and business people from the BRICS nations -- Brazil, Russia, India, China and South Africa -- to discuss city-to-city cooperation, and new energy was among the top agenda topics.Consensus had been reached at the forum that the five countries should strengthen dialogue and cooperation for provincial and local partnerships, including infrastructure, green economy and technology transfer."We are very willing to cooperate with BRICS countries on new energy innovations, promotion and market development," said Bu.According to Bu, Inner Mongolia has huge potential in new energy, with 380 million kilowatts of exploitable wind power resources, accounting for more than half of China's on-shore wind power resources.The region is aiming for a total installed capacity of 33 million kilowatts for wind power and one million kilowatts for solar power by the end of 2015, she added.At national level, the Chinese central government expects to bring the country's total wind power installed capacity up to 150 million kilowatts in the next five years, according to national development plans.Meanwhile, in Brazil, there is movement to replace fossil energy with new energy in daily use, said Jailson Lima Da Silva, State Representative of the National Union of State Legislatures of Brazil.The country is working to increase the nation's wind power capacity, and new energy is expected to account for 65 percent of the nation's total energy consumption, he said."Brazil is optimistic on wind power exploitation, which will be one of the major fields of future investment," he said.Silva expressed hopes to work with China on new energy, especially solar power and biomass energy. "Brazil has large potential in solar energy, while China is a leading producers of solar equipment," he said.According to Mlibo Qoboshiyane, a member of the Executive Council of Eastern Cape, South Africa, the African nation is also investing extensively in wind and solar energy.South Africa has just unveiled a 12-billion-U.S.-dollar program on renewable energy development, which would largely be spent on wind and solar power and reduce the use of traditional energies, said the official.It would be helpful to exchange technologies and valuable information between the BRICS countries to keep consumption of new energies sustainable and affordable, he said. 

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.

WASHINGTON, Dec. 7 (Xinhua) -- Drugs that affect the levels of an important brain protein involved in learning and memory reverse cellular changes in the brain seen during aging, according to an animal study published Wednesday in the Journal of Neuroscience. The findings could one day aid in the development of new drugs that enhance cognitive function in older adults.Aging-related memory loss is associated with the gradual deterioration of the structure and function of synapses (the connections between brain cells) in brain regions critical to learning and memory, such as the hippocampus.Recent studies suggested that histone acetylation, a chemical process that controls whether genes are turned on, affects this process. Specifically, it affects brain cells' ability to alter the strength and structure of their connections for information storage, a process known as synaptic plasticity, which is a cellular signature of memory.In the current study, Cui-Wei Xie, of the University of California, Los Angeles, and colleagues found that compared with younger rats, hippocampi from older rats have less brain-derived neurotrophic factor (BDNF) -- a protein that promotes synaptic plasticity -- and less histone acetylation of the Bdnf gene. By treating the hippocampal tissue from older animals with a drug that increased histone acetylation, they were able to restore BDNF production and synaptic plasticity to levels found in younger animals."These findings shed light on why synapses become less efficient and more vulnerable to impairment during aging," said Xie, who led the study. "Such knowledge could help develop new drugs for cognitive aging and aging-related neurodegenerative diseases, such as Alzheimer's disease," she added.

BEIJING, Nov. 20 (Xinhua) -- China on Sunday morning put two satellites into orbit from the Jiuquan Satellite Launch Center in northwest China's Gansu Province.The satellites, Chuangxin 1-03 and Shiyan Satellite 4 were launched on a Long March 2D carrier rocket at 8:15 a.m. Beijing Time, said a Xinhua photographer, who witnessed the whole process.The Chuangxin 1-03, developed by the Chinese Academy of Sciences, will be used to collect and relay water conservancy, hydrological and meteorological data and data for power supply and disaster relief from monitoring stations.The Shiyan Satellite 4 will be used for experiments on space technologies and environment probe. Developed by the Chinese Research Institute of Space Technology, it is the country's fourth technology experiment satellite.The launch was the 151th of China's Long March series of rockets. The Long March-2D is one of the derivations of Long March-2.China started development of modern carrier rockets in 1956, and Long March rockets have become the main carriers for China's satellite launching.

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.

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