National

Federal authorities in Chattanooga, Tenn., say they still don't know why a man shot up two military installations last week, killing five people. But they are releasing new details on the shooting.

Turkey, one of the key U.S. allies in the fight against the self-declared Islamic State, was shaken this week by a bombing on a Kurdish community center that has the government fending off accusations of being soft on Islamists.

The U.S. House is poised to pass legislation that would cut off federal funds to so-called "sanctuary cities" that have protected undocumented residents from immigration proceedings.

Earlier this year, the online retailer eliminated managers and embraced "holacracy" — a system of self-governance. It's one of a handful of firms that's trying to make middle management obsolete.

Just two years after dropping to a record low, Lake Michigan's water level is rebounding at a near record rate. It's good news for restoring the habitat, but not so good for some who live on the lake.

The Associated Press is making thousands of hours of archival news footage available on YouTube. The clips date back to 1895 and include historic moments from around the world.