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•  David McCullough, the winner of two Pulitzer Prizes for his biographies of Harry Truman and John Adams, as well as the author of 10 other books on subjects ranging from the building of the Brooklyn bridge to the Wright Brothers, has passed away.  He was 89.

McCullough was awarded the President Medal of Freedom in 2006, with President George W. Bush calling him “the voice of history."

•  Olivia Newton-John, who was the world's top female vocalist in the 70's and early 80's, parlaying her fame into a starring role in the film version if Grease, has passed away.  She was 73, and had waged a decades-long battle with breast cancer.

Newton-John had nine top-10 singles, including "You're The One That I Want" (a duet with Grease co-star John Travolta, "Physical," "I Honestly Love You,” and “Have You Never Been Mellow."