HO CHI MINH CITY: Forecasters warned in late September that high tides combined with heavy rain would raise flood risk across the city, and on September 30 the Saigon River spilled onto urban roads. For a megacity that has long adapted to living with seasonal flooding, the episode underscores how climate change keeps raising the stakes - and how coping strategies honed over decades are being strained past design limits.

AP via ABC News