Dr. Allan Carroll, one of Canada's top mountain beetle researchers with the Canadian Forest Service peels back the bark of a lodgepole pine infested by pine beetles in Alberta's southern Rocky Mountain forests in Kananaskis Country, Alta. on Wednesday Aug. 29, 2007. Alberta is frantically trying to slow the insect's eastward march despite a full-blown infestation in neighbouring British Columbia. (CP PHOTO/James Stevenson)