NBC Universal, with private equity investment partners Bain Capital and Blackstone Group, agreed this past weekend to buy cable network The Weather Channel, ending a long-running auction that captured interest from several major media companies. ┬á Landmark Communications Inc., owner of The Weather Channel, put the network up for sale in January, along with the popular website weather.com, and other related businesses. ┬á Initial interest was shown by CBS, Comcast, and Time Warner, the worldÔÇÖs largest media company.