Widnall, 59, has announced she will step down effective Oct. 31 to return to MIT.

CNN: Air Force Secretary Widnall Stepping Down

After more than four years as executive editor of The Washington Post, Marcus Brauchli will step down, effective December 31, to assume a new role as Vice President of The Washington Post Company, working closely with Don Graham to review and evaluate new media opportunities.

FORBES: Washington Post Hires New Top Editor; Here Are The Memos

The attention caused by Everest's trash problem is a step in the right direction, said 31-year-old Suman Thapa, who started working as a porter at 17, but the mountain has a long way to go.

BBC: Everest's growing problem

In the brokerage account, step out of the losing positions long enough (31 days) to capture a capital loss deduction.

FORBES: Paying for College: Saving Beyond the 529

Normally on October 31, my twin brother and I would step out of our shotgun house and rush to every home within a three-block radius.

NPR: Stepping Out of Fear

One nurse, followed for an hour, went to 12 different locations to perform 31 activities, including spending several minutes looking for a misplaced step stool.

FORBES: The Man Who WouldSave Health Care

Sharer will step down as CEO in May, and will serve as chairman through December 31, 2012.

FORBES: People Moves: Amgen, New York Times

On May 31, when ASEAN foreign ministers convened in the Kuala Lumpur Regent Hotel to take the historic step, demonstrators outside were crying foul.

CNN: AND THEN THERE WERE TEN