• Damaged commuter rail snarls traffic into NYC
• Yahoo buys Tumblr, promises to not 'screw it up'
• FBI mourns loss of agents during training
• Powerful earthquake hits off coast of Chile
• S. Korea: North fires 6th projectile into sea
• Va. GOP nominee compares Planned Parenthood to KKK
• Gas prices lower, but not leading to more spending
• AEG execs face questions about MJ's death
• 5 still hospitalized after trains crash
• Violence surges in strategic Syrian city