Christian Science Monitor: Efforts to map the way to a post-Kyoto climate treaty have sailed into rough water this week. But amid the turbulence, a key climate initiative is gathering momentum. Dubbed REDD, it would reward nations for keeping chain saws out of threatened tropical forests, serving as a powerful magnet that could pull several developing countries with significant emissions into a new global-warming pact. Deforestation accounts for roughly 20 percent of the greenhouse gases that human …