New York Times: It was 8 degrees in Minneapolis on a recent January day, and out on Interstate 394, snow whipped against the windshields of drivers on their morning commutes. But inside the offices of Cargill, the food conglomerate, Greg Page, the companys executive chairman, felt compelled to talk about global warming. It would be irresponsible not to contemplate it, Mr. Page said, bundled up in a wool sport coat layered over a zip-up sweater. Im 63 years old, and Ive grown up in the upper latitudes. Ive...