The fire left three administrative buildings badly burned. The memorial marks the spot where United Flight 93 crashed during the terrorist attacks of September 11.
This week, following a series of security lapses, the Secret Service director resigned. For a look at the agency beyond the scandal, author Ben Dolnick recommends the novel Big If by Mark Costello.
Democrats see an opportunity in the South's changing demographics — particularly in states with growing Hispanic communities, lots of unregistered black voters and migration from other states.
UNICEF estimates that thousands of children in West Africa have lost parents to Ebola. Convincing communities to accept and care for these children isn't always easy.
Some critics say the al-Qaida unit known as the Khorasan Group was bluffed up as an excuse for U.S. airstrikes in Syria. Intelligence officials and analysts say the group exists and is dangerous.
The family that hosted Ebola patient Thomas Duncan in Dallas is under quarantine. It's a time-honored public health tool to stop the spread of infectious disease. But it can be abused.
Several dozen children in California and Colorado have suffered paralyzed limbs, which doctors speculate could be caused by the respiratory virus EV-68. But we're a long way from knowing for sure.