Tropical storm Podul dumped torrential rain on southern China on Thursday, and caused widespread disruption in Hong Kong after tearing through Taiwan and leaving 143 people injured.

The Hong Kong Observatory will issue the No 1 typhoon signal at 10.20pm on Saturday night, as it warns the city may face occasional squally showers and thunderstorms on Sunday. The weather forecaster said an area of low pressure over the central and northern parts of South China Sea had intensified into a tropical depression,

As human activity across the world's oceans expands, scientists are zeroing in on shifts in atmospheric composition—particularly ozone, a key player in marine atmospheric chemistry. In a new study, researchers have completed China's first shipborne ozone-sounding campaign in the South China Sea,