Taking bolder responsibility for greenhouse gas emissions by its supply chain of farmers and mills and packagers than is typical, General Mills announced a goal to cut greenhouse gas emissions across its entire business — “from farm to fork to landfill” — by 28 percent within 10 years. The maker of Cheerios, Haagen Dazs ice cream, Pillsbury cake mixes and dozens of other products that collectively bring in $17.6 billion in annual sales becomes the…