A March 31 "Obit" of Alistair Cooke, by Alexander Chancellor, originally misstated a Boston public TV station's call letters as WGHB; WGBH is correct.

In a March 30 "Chatterbox" column, Timothy Noah stated several times that there was a controversy about whether the Al-Shifa pharmaceutical factory in Khartoum, which the Clinton administration bombed in 1998, had been involved in the manufacture of EMPTA, a component of the nerve gas VX. In fact, the controversy was about whether the factory had been involved in the manufacture or storage of this chemical.

A March 29 "Ballot Box" by William Saletan originally and incorrectly said that four senators who voted for a 2003 amendment declaring that Roe "secures an important constitutional right" and "should not be overturned" voted in 2004 against the Feinstein amendment to the Unborn Victims of Violence Act. The correct number is five.

In the March 29 "Supreme Court Dispatch," Dahlia Lithwick mistakenly spelled Gale Norton's name as "Gail Norton." Lithwick also wrote that Norton was to have been named to the suit Norton v. Southern Utah Wilderness Alliance in 1999, when Norton was in fact a named party only after being appointed secretary of the interior in 2001.

In the March 28 "Today's Papers" column, Michael Brus originally misstated the goal of a U.N. AIDS initiative. The United Nations hopes to treat 3 million people with AIDS by 2005, not 6 million.

In the March 22 "Brave New World," Steven Johnson wrote that an animated mosquito explains the science to viewers of the movie Jurassic Park. In fact, an animated character named "Mr. DNA" performs that function.

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