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...authors of the earlier paper. They studied just one order, the carnivores, but they did so in depth. Sampling both living terrestrial carnivores and the fossils of extinct ones, they analyzed overall brain volume relative to body mass in fully 289 species. They also factored in what is known (or, in the case of fossils, theorized) about each species' social behavior. What they got was a surprising mix of findings. (See pictures of 10 species near extinction...
...using human skin cells and four proteins. The innovation builds on the breakthrough discovery in 2006 by Shinya Yamanaka, who similarly coaxed human skin cells to revert to a pristine, embryonic state by introducing four key genes into the cells, piggybacked on viruses. However, some of those genes are known to cause cancer, which made Yamanaka's stem cells - known as induced pluripotent stem cells, or iPS cells - unsuitable for human use. (See a graphic explaining the science of stem cells...
...railroads begin competing on price and quality of service, the big winners are bound to be passengers. Further deregulation is in store: in 2012, national markets, not just international routes, are slated to be opened to more competition. "Travel as we've known it recently is being turned on its head, with larger numbers of people using high-speed rail to avoid the hassles, delays and stress of taking an airplane," says Mark Smith, a U.K.-based industry expert and founder of rail-travel website seat61.com. "On routes of three hours or less, you get to your destination faster...
...known for the yellow shirts they wear in their protests, is a loose alliance of groups opposed to the return of former Prime Minister Thaksin Shinawatra that includes businesspeople, Bangkok's urban middle class and royalists. Thaksin was ousted in a military coup in September 2006 after months of streets protests by the PAD, and subsequently convicted of conflict of interest. He fled the country rather than serve a two-year prison sentence. A proxy party supported by Thaksin that came to power in 2008 was dissolved by the Constitutional Court for electoral fraud after months of PAD protests that...
...Both PAD and Thaksin's supporters, known as the 'red shirts,' have been at the center of Thailand's civil unrest for years, flouting the law with apparently little consequences. The PAD seized Bangkok's international airport for eight days late last year, while the red shirts stormed a meeting of the Association of Southeast Asian nations in Pattaya in April forcing its cancellation, rioted in Bangkok and twice violently attacked Abhisit...