Discovery trading in environment for fast food Discovery Communications has decided it's not easy being green. The cable programming giant announced it is pulling the plug on Planet Green, its nearly 4-year-old low-rated cable network devoted to "green lifestyle programming." On May 28, which is Memorial Day, Planet Green will become Destination America, a channel that Discovery said will "celebrate the people, places, and stories of the United States, emblazoned with the grit and tenacity, honesty and work ethic, humor and adventurousness that characterize our nation." Most of the shows on Planet Green -- including "World's Greenest Homes" and "Living with Ed," a reality show starring actor and environmental activist Ed Begley Jr. -- were aimed at "motivating individuals to take action when it comes to improving the environmental status of our planet," according to the network's website. But Destination America -- which will launch in about 60 million homes -- is clearly going in a different direction. One of its new shows, "United States of Food," is described as a "celebration of America's obsession with meat." Another, "Fast Food Mania," promises to "celebrate our favorite fast food treats and search for the most unusual fast food items and outposts." "Discovery Communications continuously strives to break new ground with its unrivaled approach to storytelling that ignites viewers" curiosity," said David Zaslav, president and chief executive of Discovery Communications. Other shows on Destination America include "Cheating Las Vegas," about "elaborate scams of modern casino gaming," and "Super-Duper Thrill Rides," which will tour the nation's amusement parks.