Quiz: Mekong River Did you know the Mekong River is the longest river in Southeast Asia and supports the lives of 70 million people from Tibet to Vietnam? What more do you know about this river? 2010.02.17 Related links: Traveling down the Mekong River MORE>>Multimedia Drinking Water Runs Dry Part 5: How Black is the Dragon? Part 4: A Stream Becomes a Sewer Part 2: Scorched Rare Earth Map of Dams in Laos MOST READ>> RFA Chinese border police 'clipping' passports of citizens as they arrive back home Vietnamese delegation’s loose lips caught on video during US-ASEAN summit California church shooter in Taiwan 'peaceful reunification' group linked to Beijing Uyghur university lecturer confirmed detained in China’s Xinjiang region Chinese censors go after 'last generation' references on social media platforms