Ozone hole over Antarctic 2nd smallest in two decades
25/10/2012 9:25 am
he seasonal hole in the ozone layer above the Antarctic this year was the second smallest in two decades, but still covered an area roughly the size of North America, US experts said.
Hong Kong chokes under 'worst' air pollution
02/08/2012 2:28 pm
Hong Kong choked under the worst smog ever recorded in the city Thursday, with residents warned to stay indoors, away from the blanket of toxic haze, officials said.