Investigation is under way in the Westgate Mall in Nairobi, Kenya following the terrorist attack by extremist group Al-Shabaab last month. Click to see images of the devastation inside.

For any producer who wants to be taken seriously in today's 24/7, always-on Twitter landscape, it's crucial to find the right social-media balanceinform but don't bore, find new customers but don't bug, appear relevant but don't seem too eager.

Tropical Storm Karen churned through the Gulf of Mexico on Friday, disrupting U.S. energy output on its way to drenching the coast from Louisiana and the Florida Panhandle, the U.S. National Hurricane Center said.

Total loss auto claims frequency has soared in recent years. CCC's latest crash course report explores what's behind this trend and what to expect in the next 18 to 24 months.