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WASHINGTON, July 26 (Xinhua) -- The District of Columbia Department of Health (DOH) in the U.S. announced Tuesday that it has positively identified the West Nile Virus in mosquito samples in the District.This is the first time this summer the West Nile Virus has been identified in the U.S. capital."Residents should take caution as mosquitoes have the potential to transmit West Nile Virus to humans, and it is important for residents to take the necessary steps to avoid contracting the virus," DOH said in a statement.West Nile Virus is mainly an infection of birds, but on occasions an infected mosquito may spread it to humans. The virus is not transmitted directly from birds to humans and the risk of infection is low. In human infections, the virus generally causes no symptoms, or may cause mild flu-like symptoms.Senior citizens and people with weak immune systems are considered high risk for suffering the worst from the disease, officials said."People with a higher risk of infection should wear long- sleeved shirts, long pants, and apply insect repellent with DEET or other mosquito repellents to exposed skin according to manufacturer's directions. For children, they should use a product with DEET concentration of less than 30 percent," DOH said.

KUBUQI (Inner Mongolia), July 10 (Xinhuanet) -- Amos Nadai, ambassador of Israel to China, spoke highly of the desertification control efforts in the Kubuqi desert of China during an exclusive interview with Xinhuanet here Saturday. "It's a huge area, which is more than half of my country," Nadai said, "I see a lot of planting and it's very beautiful." Nadai was here for the 2011 Kubuqi International Desert Forum held in the Kubuqi Desert, Inner Mongolia of China. As a small country with half of its land being desert, Israel has to work very hard in desertification control and has accumulated a great deal of experience. However, Nadai praised China's efforts in learning new technologies applied in the Kubuqi desert. He said that China takes this very seriously and has developed really rapidly. "They are doing the right thing; they bring here every two years the best experts from all over the world, and they listened carefully," he said. Nadai said that he saw the way people here fight against desertification, develop tourism, boost the use of clean energy, and he was very impressed. That's why Israel is happy to cooperate with China in this field, Nadai said. He also introduced a long-term project that Israel has been working together with China in Xinjiang, which Israel introduces methods to the local farmers that can grow the same amount of crop by using 50 percent less of water. "The local people have learned everything that we can offer them and they can do it alone now," Nadai said. The ambassador, who was awarded the Honorary Citizenship of Chengdu City, the capital of Sichuan Province, Wednesday, said: "I am very very excited for that honor."

SAN FRANCISCO, July 6 (Xinhua) -- Facebook on Wednesday introduced a new video calling feature powered by Skype and some improvements to the chat designs on the social networking site.According to Facebook, users can reach video calling from a new "Call" button on a friend's profile or from the chat panel after downloading a Skype application. A recipient will receive an alert that they are being called and can then accept or decline.At the press event held at Facebook headquarters in Palo Alto, California, CEO Mark Zuckerberg said the feature will begin with one-on-one video chat. Skype CEO Tony Bates, whose company has been acquired by Microsoft, said Skype is considering having its paid product within the Facebook product.The social networking company also introduced "Ad Hoc Group Chat", which enables users to start a group chat instantly without creating a group with those multiple friends at first. The new group chat feature is also available for Facebook's mobile interfaces.Facebook also introduces a sidebar that lists the people a user messages most, enabling users to chat with close friends, professional contacts or co-workers without being interrupted. The sidebar can adjust with the size of users' browser window and automatically appears when the window is wide enough.In the opening remarks at the press event, Zuckerberg confirmed that Facebook had surpassed 750 million monthly active users. He said the company had declined to announce the number earlier because it has become focused on other metrics, like how actively users are sharing information.The CEO said users are now sharing 4 billion "things" on Facebook every day, which grew at an exponential rate compared to the amount users share a year ago."Social networking is at an inflection point," said Zuckerberg, adding that he believes social networking now is more about the strength of connecting people rather than the quantity of users or ubiquity of the technology.Zuckerberg presented a graph to show how Facebook product launches have helped drive the growth of sharing. He said the social network expects more innovations from other companies involved in everything from music to communication to help drive the growth.

LOS ANGELES, June 10 (Xinhua) -- The Aquarius/SAC-D observatory, NASA's first ever satellite to study the saltiness of Earth's oceans, is in excellent health after its launch early Friday, initial telemetry reports showed.The observatory rocketed into space from Vandenberg Air Force Base in California atop a United Launch Alliance Delta II rocket at 7:20:13 a.m. PDT (10:20:13 a.m. EDT).Less than 57 minutes later, the observatory separated from the rocket's second stage and began activation procedures, establishing communications with ground controllers and unfurling its solar arrays, NASA's Jet Propulsion Laboratory (JPL) said.During the next 25 days, the Aquarius/SAC-D service platform will be tested and maneuvered into its final operational, near-polar orbit 408 miles (657 kilometers) above Earth. Science operations will begin after the observatory's instruments are checked out. This commissioning phase may last up to 65 days, JPL said.Aquarius will map the global open ocean once every seven days for at least three years with a resolution of 93 miles (150 kilometers). The maps will show how ocean surface salinity changes each month, season and year. Scientists expect to release preliminary salinity maps later this year."Aquarius is a critical component of our Earth sciences work, and part of the next generation of space-based instruments that will take our knowledge of our home planet to new heights," said NASA Deputy Administrator Lori Garver. "The innovative scientists and engineers who contributed to this mission are part of the talented team that will help America win the future and make a positive impact across the globe."Aquarius will measure salinity by sensing thermal microwave emissions from the water's surface with three microwave instruments called radiometers. When other environmental factors are equal, these emissions indicate the saltiness of surface water. A microwave radar scatterometer instrument will measure ocean waves that affect the precision of the salinity measurement.Because salinity levels in the open ocean vary by only about five parts per thousand, Aquarius will be able to detect changes as small as approximately two parts per 10,000, equivalent to about one-eighth of a teaspoon of salt in a gallon of water."Data from this mission will advance our understanding of the ocean and prediction of the global water cycle," said Michael Freilich, director of NASA's Earth Science Division in the Science Mission Directorate at agency headquarters in Washington. "This mission demonstrates the power of international collaboration and accurate spaceborne measurements for science and societal benefit. This would not be possible without the sustained cooperation of NASA, CONAE and our other partners."The Aquarius/SAC-D (Satellite de Aplicaciones Cientificas) observatory is a collaboration between NASA and Argentina's space agency, Comision Nacional de Actividades Espaciales (CONAE).Aquarius was built by NASA's JPL and the Goddard Space Flight Center in Greenbelt, Maryland. NASA's Launch Services Program at the Kennedy Space Center in Florida manages the launch.JPL will manage Aquarius through its commissioning phase and archive mission data. Goddard will manage Aquarius mission operations and process science data. CONAE is providing the SAC-D spacecraft, optical camera, thermal camera with Canada, microwave radiometer, sensors from various Argentine institutions and the mission operations center. France and Italy also are contributing instruments.

WASHINGTON, Aug. 24 (Xinhua) -- Online search engine Google Inc. has agreed to pay 500 million U.S. dollars to settle claims that it allowed online Canadian pharmacies to place advertisements targeting consumers in the United States, U.S. Justice Department announced Wednesday.The settlement, one of the largest ever in the United States, represents the gross revenue received by Google as a result of Canadian pharmacies advertising through Google's AdWords program, plus gross revenue made by Canadian pharmacies from their sales to U.S. consumers.The advertisements led to illegal imports of prescription drugs into the country, the Justice Department said.The shipment of prescription drugs from pharmacies outside the United States to customers in the United States typically violates the Federal Food, Drug and Cosmetic Act and in the case of controlled prescription drugs, the Controlled Substances Act.Google was aware as early as 2003, that generally, it was illegal for pharmacies to ship controlled and non-controlled prescription drugs into the United States from Canada."The Department of Justice will continue to hold accountable companies who in their bid for profits violate federal law and put at risk the health and safety of American consumers," Deputy Attorney General James Cole said in a statement."This settlement ensures that Google will reform its improper advertising practices with regard to these pharmacies while paying one of the largest financial forfeiture penalties in history," he said.Google had previously set aside that amount for a possible settlement over its advertising practices, according to a regulatory filing in May.

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