A major Antarctic glacier has passed its tipping point, according to a new modelling study. After losing increasing amounts of ice over the past decades, it is poised to collapse in a catastrophe that could raise global sea levels by 24 centimetres. Pine Island glacier (PIG) is one of many at the fringes of the [...]

The Copenhagen summit on climate change taught Europe a hard lesson about its trans-Atlantic partner. Great hope had greeted President Obama when he replaced George W. Bush at the American helm, but a year later Europeans are realizing that Mr. Obama is going to have a very difficult time delivering on his agenda. During the [...]

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CNN’s Dr. Sanjay Gupta reports hearing gunshots in Port-Au-Prince as thousands search desperately through the rubble for loved ones. Many quake survivors are spending the night outside var showHover=false;

CNN’s Ivan Watson is at a Port-au-Prince clinic where the wounded and the dead lie on the streets. Doctors say they don’t have enough medicine to treat patients. Caution this report includes graphic content. var showHover=false;