Montreal Gazette: Seven years ago, American photographer James Balog travelled to the Arctic to take pictures of glaciers for National Geographic magazine.
Seeing water running off the massive ice sheets and giant chunks of ice breaking off and floating in the ocean inspired Balog, at the time a climate-change skeptic, to undertake the Extreme Ice Survey, installing dozens of cameras at glaciers in the Arctic to document the changes he was seeing.
The cameras take images every half-hour in daylight, year round....