Uzbekistan’s national air carrier is telling passengers to limit the amount of “nos,” or powdered tobacco, they take with them aboard flights, RFE/RL’s Uzbek Service reports.Use of nos is common throughout Central Asia, is widely available at bazaars, and often carried in small ornate containers.Uzbekistan, Tashkent airportThe tobacco is placed under the tongue and produces an effect similar to smoking cigarettes but at a far lower cost.The Uzbekiston Hawa Yollari air company announced on August...