World's smallest ungulates spotted in Vietnam after nearly 30 years Programme to provide clean water for mountainous areas Hoi An intensifies fight against plastic wastes Hanoi vows to remove deadly stoves by 2020 Da Nang to host international conference on sustainable marine economic development Na Hang: a natural beauty and feast for tourists’ eyes Hanoi to battle plastic waste Half of Mekong Delta to be lost under sea level: research Pictures of the Opening Ceremony of the Conference - Exhibition of Environmental Equipment and Technology 200 volunteers join in Red River and Long Bien Bridge Cleanup PM orders investigation into Dak Nong forest destruction Invitation to attend the Exhibition and Seminar for Environmental Technology and Equipment Arousing potential of Na Hang-Lam Binh national site Rhino fossils discovered at Phong Nha-Ke Bang National Park Mud dumping off Quy Nhon coast rejected Ha Long city develops sustainable tourism More than 2,000 people join beach cleaning in Da Nang Pine forests destroyed due to violations in forest management Ancient tea trees in Yen Bai receive recognition Hanoi and HCM City ranked as world's most polluted cities