CẦN GIỜ DISTRICT, Vietnam— At night, waves crash into the rocky barricades running along the coast of Cần Giờ, a refuge of mangroves and beaches in the southernmost reaches of Ho Chi Minh City. As the sun rises, the waves recede, leaving a damp but navigable plain stretching 2 kilometers (1.2 miles) offshore. For about … Continue reading As livelihoods clash with development, Vietnam’s Cần Giờ mangroves are at risk