Leaving things as they are in the Arab world, the Institute for Peace study says, will result in cosmetic changes only, allowing autocratic rulers to fend off real democratic change.

VOA: standard.2010.05.19

But in the 13th century, the capital city,Angkor,died off, and a new scientific study indicates that climate, specifically decades of drought interspersed with intense monsoons, helped bring down the Khmer capital.

VOA: standard.2010.04.05