Snippets from the news
• Alliance of black churches speaks out on climate change.
• Beijing may ban 90 percent of cars to clear air for Olympics.
• Gulf dead zone second-largest ever.
• First U.S. coal-to-liquids plant to be built in West Virginia.
• U.S. Army works to cut carbon bootprint.
• American Trucking Association sues California ports.
• Nigerian rebels attack Shell pipelines.