Harbine's work focuses on litigation and advocacy to address the causes of global warming, including coal mining and coal-fired power plants. Earthjustice's Northern Rockies office is also engaged in litigation to address the effects of global warming, particularly on species such as the grizzly bear, lynx, wolverine, and Arctic grayling. Born and raised in Missoula, Montana, Harbine attended law school at the University of California, Berkeley. She was an attorney at a small environmental and land use law firm in San Francisco, California before returning to Montana to work for Earthjustice in 2006.