Vietnam throws away about 1.8 million tonnes of plastic every year, standing 17th among 109 countries in terms of plastic waste volume released.
Cambodia announced that it will send 1,600 tonnes of plastic waste back to the U.S. and Canada.
Understanding how plastic flows along the Mekong into the ocean is key to reducing its impacts.
Unsustainable agriculture, rising sea levels, construction of dams on the Mekong and increased soil and water salinisation are also concerns.
Mekong River water levels that fell dramatically on Thursday under impact from dam operations will soon recover, says the national water management agency.
Vietnam wants to foster cooperation between countries in the Mekong sub-region and share experiences in agricultural and rural development through policy advisory networks of not only government agencies but also non-governmental organisations and the private sector.
Beng Per Wildlife Sanctuary has lost more than 60 percent of its forest cover since it was established in 1993, with most of the loss occurring since 2010.
Only 10 percent of tiger habitat was included in the latest tiger population survey nationwide, according to the Wildlife Conservation Society-Myanmar.
The size of the tiger population is difficult to know exactly because some areas are off limits due to armed conflicts, which makes data collection dangerous.
Myanmar-China joint economic zones will be constructed in Muse, Chin Shwe Haw and Kanpaiktee according to Union Minister for Commerce Dr. Than Myint.
Muse-Kyegaung will be set up as core zone, while Kyu Gote(Paingsang)-Wanding-Nwanyin (Kyeinseinkyaw)-Mantman (Shweli) will be for exporting products, manufacturing, processing and warehousing areas and the Saelan (Manthero)-Sailin and Namtkham-Naungtung as import processing and warehouse areas.