BBC
DURHAM, N.C. -- Millions of Internet users have been enjoying the fun -- and free -- services provided by advertiser-supported online social networks like Facebook. But Landon Cox, a Duke University assistant professor of computer science, worries about the possible down side -- privacy problems.
GREAT GUANA CAY, BAHAMAS (September 29, 2009) -- It is well known that people from all over the world come to the Bahamas to enjoy the pristine waters, spectacular coral reefs and great fishing. Tourism produces approximately 55 % of the gross domestic product and employs up to 60% of the total workforce in the Bahamas.
Sometimes satellite imagery will leave a person in awe of nature's power and that's what the latest satellite image from NASA's Aqua satellite will do as it shows the giant Typhoon Morakot's center about to cross Taiwan. Morakot has already caused problems in Taiwan on its approach and has proven deadly in the Philippines.
A spate of articles have been published recently concerning the effects of Green Tea on prostate cancer. The following discussion of the science, as well as the media response, is taken from my blog at Blue-Genes.net - please subscribe there, as I'm not sure whether I will continue to copy my posts here. N.B. the press release is also featured on Scienceblog here. Click here to read original post
When it comes to data storage, density and durability have always moved in opposite directions -- the greater the density the shorter the durability. For example, information carved in stone is not dense but can last thousands of years, whereas today's silicon memory chips can hold their information for only a few decades. Researchers with the U.S.
A new approach to analyzing social networks, reported in the current issue of the International Journal of Services Sciences, could help homeland security find the covert connections between the people behind terrorist attacks. The approach involves revealing the nodes that act as hubs in a terrorist network and tracing back to individual planners and perpetrators.
Forget boxers Oscar de la Hoya and Shane Mosley. The fastest punches are delivered by a lowly crustacean - the stomatopod, or mantis shrimp. With the help of a BBC camera crew and the loan of a high-speed video camera, University of California, Berkeley, scientists have recorded the swiftest kick, and perhaps most brutal attack, of any predator. The shrimp flail their club-shaped front leg at peak speeds of 23 meters per second to shatter the hard shells of their prey.
Boeing has joined a small group of technology bigwigs trying to test a theory that would let engineers negate some of the effects of gravity. The American aerospace giant is using the work of controversial Russian scientist Yevgeny Podkletnov, who claims to have developed a device that can shield objects from the Earth's pull. Other researchers claim Podkletnov's work is hokum, but considering the cost savings such a device would represent for air travel, Boeing seems intent on getting to the bottom of it all. The Russian says he found that objects above a superconducting ceramic disc rotating over powerful electromagnets lost weight, the BBC reports. "The reduction in gravity was small, about 2 percent, but the implications --- for example, in terms of cutting the energy needed for a plane to fly --- were immense."
