Merriam-Webster declares “they” as word of the year based on a 313 percent increase in look-ups on the company’s search site Source

Singer Marie Fredriksson of the Swedish pop duo “Roxette” died Monday after battling cancer for 17 years. Some of Roxette’s biggest hits in the late 80s and 90s include “Listen to Your Heart,” “It Must Have Been Love” and “Joyride.” The duo sold more than 80 million records. Fredriksson’s bandmate, Per Gessle, remembers her as an amazing performer and wonderful friend. She is survived by her husband and two children. Source

House Speaker Nancy Pelosi and the Democratic chairs of six House committees revealed articles of impeachment against President Trump, accusing him of abuse of power and obstruction of Congress. It’s only the fourth time in history that Congress is acting to potentially remove a president from office. Gayle King, Anthony Mason and Tony Dokoupil anchor a CBS News Special Report from New York with reports from Nancy Cordes on Capitol Hill and Weijia Jiang at the White House. Source

Trump took to Twitter to denounce FBI Director Christopher Wray over his reading of the Justice Department inspector general’s report on the origins of the bureau’s Russia investigation. Source

For the first time ever, this year’s Kennedy Center Honors celebrates a TV show: “Sesame Street.” It has revolutionized how we think about childhood and the world. The ceremony, which airs Sunday on CBS, paid tribute to the program’s co-creators, Lloyd Morrisett and Joan Ganz Cooney, and especially the muppets. Anthony Mason reports. Source

Not only are the Muppets all different colors on “Sesame Street,” but from the beginning, so were the actors Source

Fredriksson’s management company said the singer of hits including “The Look” and “It Must Have Been Love” died after a 17-year battle with brain cancer. Source

Multiple Democrats familiar with the proceedings told CBS News there will be two articles: abuse of power and obstruction of Congress Source

A look back at what we’ve been covering on “CBS This Morning.” Source

House Democrats are set to deliver articles of impeachment against President Trump on Tuesday. CBS News legal analyst Rikki Klieman joins “CBS This Morning” to discuss what’s next in the process. Source