No company suffered on Sept. 11 as much as the bond broker Cantor Fitzgerald, which lost 658 people. One of the few employees to survive that day was Lauren Manning, who was in the lobby of the World Trade Center's North Tower when the first plane hit.
Manning had been rushing to an elevator and was instantly engulfed in flames that came into the lobby, leaving her with burns on more than 80 percent of her body.
The terrorist attacks on Sept. 11, 2001, have been pegged as the moment that changed everything for Americans. Nothing was supposed to be the same after the attacks, and it was expected to usher in a new era for America.
Writer George Packer remembers having a moment of optimism.
The attacks of Sept. 11, 2001, reshaped the U.S. foreign policy agenda, says Doug Feith, who was undersecretary of defense for policy in the Bush administration.
He sees the top two goals of that new agenda as achieved: preventing future attacks and disrupting terror networks. But he says the U.S. failed on the other goal: countering ideological support for terrorism.
In Murfreesboro, Tenn., more than 5,000 people are expected Sunday for the annual Sept. 11 memorial. What started as a small flag ceremony at the Rutherford County's Sheriff's Department 10 years ago is now a major community event. Murfreesboro has been dealing with another legacy of the attacks, which is playing out in a controversy over a mosque.
At the Smithsonian's National Museum of American History, a small temporary exhibit marks Sept. 11, 2001. Along with artifacts found in the wreckage of the World Trade Center and the Pentagon — like a smashed firetruck door and twisted bits of fuselage — is a bin filled with every imaginable object people have tried to carry on airplanes.
Migratory songbirds like Swainson's thrushes spend their winters in South and Central America. But as spring approaches, they fly thousands of miles north to Canada.
Along the way, these little birds show endurance that would shame even the toughest athletes. They can fly for up to eight hours straight without stopping for food or water.
Scientists know how birds cope without food during the flights: They burn fat. But until now, they haven't figured out the water question. How do migrating birds avoid dehydration after all that flying?