Did penguins exist in Africa?
Africa isn't where penguins might be expected to be found, but new fossil finds confirm as many as four species lived there in the past, paleontologists say. Only one penguin species lives in Africa now -- the black-footed penguin, also known as the jackass penguin for its loud, donkeylike bray, researchers from the U.S. National History Museum and the National Evolutionary Synthesis Center said. New fossil findings represent the oldest evidence of these seabirds in Africa, predating previously described fossils by 5 million to 7 million years.
Should we fear street gangs turning to cybercrime?
Street gangs aren't using the Internet to recruit new members or commit complex cybercrimes, a study by Texas researchers indicates. "What they are doing online is typically what they are doing on the street," study co-author David Pyrooz, at Sam Houston State University, said. "For the most part, gang members are using the Internet for self-promotion and braggadocio but that also involves some forms of criminal and deviant behaviors." The study, published in the journal Justice Quarterly, looked at the use of the Internet and social-networking sites by gang members and other young adults.
Can greenhouse gases be used as a fuel source?
Excess carbon dioxide in the Earth's atmosphere, the major driving force of global climate change, could someday be a fuel source, a U.S. biotechnologist says. Michael Adams at the University of Georgia and his colleagues have found a way to transform the carbon dioxide trapped in the atmosphere into useful industrial products. Their discovery could lead to the creation of biofuels made directly from the greenhouse gas responsible for trapping the sun's rays and raising global temperatures.