Agence France-Presse: Degradation of the environment in Arab countries is costing them around five percent of gross domestic product every year, according to a study presented in Manama on Monday. The report, “Arab Environment: Future Challenges” says Arab countries face a shortage of drinking water and desertification as well as air and sea pollution because of climate change and other problems. “Climate change, population growth and the rapid pace of urban and economic development in some Arab …