Kinder Morgan, Inc. (NYSE:KMI) is weighing a sale its carbon dioxide Business in North America, which could fetch more than $5 billion, according to people familiar with the matter. Kinder Morgan shares rose on the news. Kinder Morgan is working with advisers to seek buyers for its CO2 business, said the people, who asked to not be identified because the matter isn’t public. No final decision has been made and Kinder Morgan could opt to keep the segment, they said. A representative for Kinder Morgan declined to comment.