Yahoo shares are set to tumble today after its dismissal of an improved $46.5bn (23.6bn) takeover approach from Microsoft prompted the software giant to walk away.

By Gregory Lewis, South Florida Sun-Sentinel Dec. 1--When a friend told Laura Martin that a group of Broward County women was forming to take on public service projects in the underserved black community, she signed up as a charter member. That was 50 years ago.

Add this to the list of things you never want to hear a board member say: I'm departing because there's a "significant chance of a crisis on the horizon." That's precisely what happened at XM Satellite Radio on Feb. 13, when director Pierce Roberts told the company he was resigning.