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...collaborators showed that this temporary learning deficit could be traced to a remarkable change that occurs at puberty in the hippocampus, a region of the brain that is involved in remembering places and integrating other kinds of learning. The change affects the GABA neurotransmitter system. GABA, which is present in all mammals, inhibits or down-regulates nerve signals, as opposed to exciting them; this calming, relaxing system is activated by tranquilizers like Valium and the popular sleep drug Ambien, which attach to GABA receptors and act similarly to GABA. But at puberty, female mice experience a 700% increase...
...drug lords will be looking for a chance to return to Marjah as soon as the NATO troops move on. That opportunity may present itself this summer. As McChrystal turns his attention to other Taliban strongholds in Helmand and neighboring Kandahar province, he will depend on Afghan security forces to protect Marjah. In the past, the drug lords have exploited the absence of Western troops to strike alliances with Afghan officials, getting them to play the Taliban's role of protectors of the drug trade. Khan, the farmer, has seen it happen before. "When there is no Taliban, the government...
...many of his followers also believe he is the reincarnation of King Taksin, who ruled in the late 18th century. King Taksin went mad, and so was ousted and executed in 1782 by a general who then proclaimed himself king and founded the Chakri Dynasty. (King Bhumibol, Thailand's present king, is a descendant of that general and part of the Chakri Dynasty.) Thaksin has frequently blamed King Bhumibol's advisors for the coup that ousted him, and claimed they informed the king in advance about the coup. The royal advisors have denied the allegations...
Elections are indeed a critical condition for Haiti's future. The question is whether conditions on the ground in Haiti's nightmarish present can realistically accommodate them...
...Maliki took a risk by separating himself from the Shi'ite Iraqi National Alliance (INA) that had propelled him to power, but struggled nonetheless to present himself as a truly national figure. While he had cracked down hard against terrorism and militias, especially the radical Shi'ite followers of Moqtada al Sadr, his support for a government de-Ba'athification committee that banned 500 parliamentary candidates - including many key Sunni politicians - a few weeks before the election appears to have helped fuel Sunni suspicion that he harbored a sectarian agenda. Maliki's troubles have been a boon to the Sadrists...