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WASHINGTON, June 6 (Xinhua) -- A new University of Missouri study shows that the exposure to the controversial chemical Bisphenol A (BPA) through diet has been underestimated by previous lab tests.The findings were published on Monday in Environmental Health Perspectives.In the study, researchers compared BPA concentrations in mice that were given a steady diet supplemented with BPA throughout the day, compared to the more common lab method of single exposure, and found an increased absorption and accumulation of BPA in the blood of the mice.The authors continuously exposed the mice to BPA through their feed, which is considered the primary route of exposure to this chemical in animals and humans. In previous studies examining the effects of BPA, mice were exposed to BPA only through a one-time administration.Following the exposure through the diet, a significantly greater increase in the active form of BPA, which is the greatest threat as it is the form that can bind to sex steroid receptors and exert adverse effects, was absorbed and accumulated in the animals."People are primarily and unknowingly exposed to BPA through the diet because of the various plastic and paper containers used to store our food are formulated with BPA," said Cheryl Rosenfeld, associate professor in biomedical sciences and corresponding lead author. "We know that the active form of BPA binds to our steroid receptors, meaning it can affect estrogen, thyroid and testosterone function. It might also cause genetic mutations. Thus, this chemical can hinder our ability to reproduce and possibly cause behavioral abnormalities that we are just beginning to understand."The study notes that more than eight billion pounds of BPA are produced every year, and more than 90 percent of people in the United States have measurable amounts of BPA in their bodies."When BPA is taken through the food, the active form may remain in the body for a longer period of time than when it is provided through a single treatment, which does not reflect the continuous exposure that occurs in animal and human populations," said Rosenfeld. "We need to study this further to determine where the ingested BPA becomes concentrated and subsequently released back into the bloodstream to be distributed throughout the body."

SAN FRANCISCO, Sept. 6 (Xinhua)-- Yahoo on Tuesday fired Chief Executive Officer Carol Bartz and replaced her temporarily with the company's chief financial officer."On behalf of the entire board, I want to thank Carol for her service to Yahoo during a critical time of transition in the company's history, and against a very challenging macro-economic backdrop," said Yahoo Chairman Roy Bostock in a news release.The Yahoo Board of Directors appointed CFO Timothy Morse as interim CEO who will manage the company's day-to-day operations until a permanent chief executive is chosen.Carol Bartz, chief executive of Internet company Yahoo Inc, is shown in this undated publicity photo released to Reuters January 13, 2009. Before Yahoo's formal announcement, several news organizations and tech blogs posted an email reportedly from Bartz sent from her iPad to all employees of the company."To all, I am very sad to tell you that I've just been fired over the phone by Yahoo's Chairman of the Board. It has been my pleasure to work with all of you and I wish you only the best going forward."Bartz, 63, took over the Yahoo CEO role from co-founder Jerry Young in January 2009, when the company was struggling to stay competitive and profitable in a market dominated by Google. However, Yahoo never reached the heights she had foreseen.In the most recent quarterly earnings report in June, Yahoo reported net revenue of 1.1 billion U.S. dollars, down 5 percent from last year.Morse, 42, was hired as executive vice president and CFO at Yahoo in July 2009. "It is an honor to be selected for this role," he said in a statement Tuesday.Yahoo said it is starting a search for a new permanent CEO and plans to hire a "nationally recognized executive search firm" to assist in the effort.

WASHINGTON, Aug. 12 (Xinhua) -- NASA announced Friday the creation of a new directorate that will focus on both the International Space Station operations and human exploration beyond low earth orbit.The Human Exploration and Operations Mission Directorate combines the Space Operations and Exploration Systems mission directorates. While the transition and personnel assignments will take several weeks to finalize, the directorate already is supporting space station operations. It also will manage commercial crew and cargo developmental programs; construction of the Orion Multipurpose Crew Vehicle, a spacecraft designed to travel beyond low Earth orbit; development of a new heavy lift rocket, known as the Space Launch System; and other programs within the directorates."America is opening a bold new chapter in human space exploration," NASA Administrator Charles Bolden said in a statement. "By combining the resources of Space Operations and Exploration Systems, and creating the Human Exploration and Operations Mission Directorate, we are recommitting ourselves to American leadership in space for years to come."Associate Administrator Bill Gerstenmaier will head the new organization. He previously served as the associate administrator for Space Operations.

LOS ANGELES, June 29 (Xinhua) -- The war on cloud intensified as Microsoft Office announced its decision on Tuesday to go cloud in an attempt to compete with its immediate but not last competitor, Google Docs.Microsoft holds a virtual monopoly on office productivity software. Most computer users in the world use the Office software for word processing, spreadsheet, presentation and other purposes. However, Microsoft Office faces a strong enemy -- Google Docs, which provides cloud service, that means users do not have to purchase any software to be installed on their computers. If they go online, they can start use the application, and they do not need to worry about their files, because the files also go with the cloud, and users can get access to their files at anytime, anywhere.The cloud-based Office 365 is designed for the mobile age when people go with their software and documents.The actual features and functionality of the tools have a lot of bearing on which productivity suite users choose. The Word Web App is more visually appealing and polished than its Google counterpart, but overall the two seem roughly equivalent in features.When tested on a sample presentation in both the PowerPoint Web App and Google Docs Presentation, the PowerPoint Web App immediately presented with a diverse selection of attractive themes to choose from, but Google defaulted to plain black text on a plain white background.On slide and image, in Google Presentations, the image filled the whole slide but the PowerPoint Web App was smart enough to size the image automatically.When push comes to shove, the features of the Office Web Apps in Office 365 are pretty much the same as what Google Docs has to offer. However, Microsoft makes key features easier to get to, and works more intuitively. For users already familiar with Microsoft Office, the Office Web Apps version is easy to use.Both Office 365 and Google Docs are Web-based platforms, and they will work from any Web browser. Google Docs excels in the Chrome browser while Microsoft Office 365 works best in Internet Explorer. It makes sense that each would make sure that their online productivity tools are optimized for performance and functionality in their own browser.Collaboration in real time is the primary selling point of Google Docs, which can be shared with any other Google account. The users who share a file can all access and work with it simultaneously. Each user is assigned a unique color so users can easily identify who is making changes to what.But in the price war, Microsoft can not beat Google Docs. Office 365 starts at six dollars per user per month for the Professional and Small Business plan. The Medium Business and Enterprise plans range from 10 to 27 dollars per user per month. But the Google Docs is free.Microsoft also faces a challenge on how to go cloud while still keep the computer-based Office software.Statistics showed that nearly nine of every 10 office computers runs one of the 14 versions of Office the company has released since the software's launch in 1989. The company now needs to convince those computer users, estimated at about one billion, to switch to Office in the cloud without disrupting the legacy version that is financing the transition.The growing cloud market is profitable. The International Data Corp. projected the market for cloud-computing services and software is expected to grow more than 27 percent annually over the next five years and reach 73 billion dollars by 2015.It is estimated that by 2015 one of every seven dollars spent on technology will be connected with cloud computing and the winners of the cloud platform wars will likely be the new power brokers of the IT industry.It is reported that Salesforce.com has added a communication technology called Chatter to its service to allow clients to communicate within its sales management cloud service. Amazon's Elastic Cloud has attracted enterprise customers because of its ability to scale up capacity to match peaks in client demand.By 2015, it is estimated that software-oriented cloud services will account for roughly three-quarters of all spending on public cloud services. Enditem

BEIJING, Sept. 4 (Xinhua) -- Officials and delegations from China and African countries have gathered at a seminar being held in Beijing to discuss rural development and economic growth.The seven-day seminar kicked off on Sunday, attracting representatives from China and 11 African countries to exchange views and experiences related to the seminar's theme of "agriculture and rural development."Justin Lin Yifu, chief economist and senior vice president of the World Bank, said at the seminar's opening ceremony that African countries should take cues from China's experience in creating a series of policies to bolster agricultural and rural development, as these policies have also facilitated the country's economic growth.Hu Jinglin, assistant to China's Minister of Finance, said improved agricultural cooperation between China and Africa will help enhance global grain security.China has worked on 142 cooperative agricultural projects with 14 African countries to date. In addition, it has sent 104 agricultural experts to 33 African countries to train more than 4,200 local agricultural technicians.