'National Geographic' photographer James Balog was once a skeptic about climate change. But through his Extreme Ice Survey, he discovers undeniable evidence of our changing planet. In 'Chasing Ice,' we follow Balog across the Arctic as he deploys revoluti
Heart-stopping in its coverage of the brave and risky attempt by a scientist named James Balog and his team of researchers on the Extreme Ice Survey, where "extreme" refers to their efforts almost more than to the ice. During repeated expeditions to Greenland, Iceland, Alaska and Montana, the team took stop-motion cameras and anchored them in place. We see glaciers retreating from ice mountains to expose the rock they rest on. One glacier loses the height in ice of the Empire State Building. - Three stars