• According to a new study, New York City is responsible for a full one percent of the nation's greenhouse-gas emissions. A remarkable thing about the study: It was commissioned and publicized by our own mayor, who's basing an emission-cutting program on it. [MetroNY]
• Citigroup is laying off 17,000 employees in a major slimming-down operation, and its New York headquarters is expected to be hit hard, alongside the megabank's London and Hong Kong hubs. [NYT]
• A female teacher at the Newark Boys Chorus School is the latest inductee into the tabloid pantheon after an alleged dalliance with a student; she is charged with two counts of aggravated sexual assault and one count of child endangerment. [WNBC]
• Notoriously cash-poor Columbia University is in the money, as 92-year-old billionaire John Kluge is giving his alma mater $400 million for scholarships to the needy. Somewhat weirdly, the money will be distributed among already accepted students. [NYP]
• And in a cross-platform twist on an old story, a CBS News producer was fired for plagiarizing, "almost verbatim," a Wall Street Journal article — which Katie Couric proceeded to read in her video blog. Those bloggers: No scruples, we're telling you. [amNY]