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BEIJING, May 16 (Xinhuanet) -- NASA is close to deciding on a landing site for its Mars rover Curiosity mission by narrowing the choices to four, media reports said Monday.Scientists in the close-knit Mars research community get one last chance to make their case this week when they gather before the "judges" — the team running the 2.5 billion U.S. dollar mission that will soon suggest a landing site to NASA, the ultimate decider."All four of these places are compelling places on Mars to study. There's not a loser among them," said landing site scientist Matt Golombek of the NASA Jet Propulsion Laboratory, one of the meeting's leaders.The mission will use rover Curiosity to study whether a selected area will have environmental conditions suitable for life and for preserving evidence about whether extraterrestial life has existed.Being nuclear-powered, the rover cannot go to a location that has either water or ice within one meter of the surface.The size of a mini Cooper, Curiosity is scheduled to launch in late November after a two-year delay.

JINAN, Feb. 3 (Xinhua) -- Chinese Premier Wen Jiabao on Wednesday and Thursday visited drought-hit villages and ordered all-out efforts to combat the dry spell while celebrating the Chinese New Year with local people.When visiting Jiaxiang County and Qufu City in east China's Shandong Province, Wen inspected cornfields and reservoirs to assess the drought's impact.The drought, which began in October, has hit the southwest parts of Shandong hardest."It's hard to know when it will rain. We must prepare for the worst and do our best to combat the drought to ensure a good harvest," Wen said while visiting a reservoir in Qufu.Wen made the remarks Wednesday afternoon after learning the reservoir was holding a volume of water 8 million cubic meters less than normal.He told officials accompanying him any drought-caused reduction in grain output may undermine the government's top priority for 2011: the stabilization of prices.Officials at all levels must work to combat the drought, Wen added.China's central authorities last week announced an ambitious water conservancy project development plan, to raise China's ability to control flooding and drought.Under the plan, the average annual government spending on such projects will double the 2010 level."The drought affects agricultural output, which is related to the nation's food security and the income of rural people. I worry about it," Wen told a local farmer Wednesday morning.In the evening, Wen joined Liu Xianglun, 77, and his family at their house to make dumplings to eat to welcome the Chinese New Year.Before visiting Shandong, Wen visited farmers and workers in Dabieshan Mountain area, an old revolutionary base in east China's Anhui Province.The Spring Festival, China's Lunar New Year, falls on Thursday.

BEIJING, Feb. 10 (Xinhua) -- China's drought control authorities announced Thursday that hours of snowfall and irrigation have eased to some extent the severe drought in parts of the nation.Rapid spreading of the dry spell in the country's winter wheat producing regions has been curbed by wide-spread snowfall in the areas along the Yangtze, Huaihe and Yellow rivers and in the country's northern part on Wednesday and Thursday, the Office of State Flood Control and Drought Relief Headquarters said in a statement on its website.Drought-hit areas in Henan and Anhui, which are two major wheat-producing provinces, were reduced by 6.3 million mu (420,000 hectares) and 4.1 million mu, respectively, from Wednesday, the statement said. The agency added that irrigation also contributed to easing the effects of the drought.The statement said that as of Thursday, eight drought-hit provinces had irrigated 143 million mu of drought-affected wheat producing areas, which accounts for 52 percent of the combined winter wheat producing areas in the provinces. The eight provinces include the territories of Shandong, Henan, Hubei, Anhui, Shanxi, Shaanxi, Gansu and Jiangsu.As of 3 p.m. Thursday, the drought had affected 101.28 million mu of crops nationwide and left 2.81 million people and 2.57 million heads of livestock short of drinking water, said the statement.Cloud seeding on Wednesday and Thursday during a recent cold front, also helped alleviate drought in some regions, according to a report posted on the website of the China Meteorological Administration on Thursday.The report also said that the artificial precipitation had mitigated the shortage of moisture in the soil in parts of Henan and Anhui. The situation is expected to improve as the rain and snow continues.However, experts urged more measures from local governments to ensure winter wheat production since the current precipitation is not adequate to "completely ease the drought", the report said.

LOS ANGELES, March 5 (Xinhua) -- Law enforcement agencies are now using smart phones to track and arrest graffiti vandals in Los Angeles, a newspaper report said on Saturday.The graffiti-tracking program, spearheaded by the Tracking and Automated Graffiti Removal System, or TAGRS, allows graffiti- cleaning crews equipped with smart phones to photograph the markings and upload them to a Los Angeles Police Department (LAPD) database, the Los Angeles Times said.The photos are used to gather evidence for prosecution and restitution, the paper quoted city officials as saying.Once the graffiti suspects' identities are discovered, the information is added to the TAGRS database and may eventually uncover incidents involving the same suspects, the paper said.The LAPD launched a pilot project in 2009 in Van Nuys near Los Angeles, modeling its version on one run by the Orange County Sheriff's Department, according to the report.The program is now anchored at four LAPD stations, Van Nuys, Hollenbeck, Central and Harbor, said Mayor Antonio Villaraigosa's spokeswoman Casey Hernandez.Los Angeles spends about 10 million dollars a year cleaning up graffiti, Hernandez said.