Electors are voting in each state to formalize President-elect Donald Trump’s victory over Vice President Kamala Harris in the 2024 election. Source

Among the 25 films selected by the Library of Congress to be preserved for future generations are the Coen Brothers’ “No Country for Old Men,” “The Social Network,” Cheech & Chong’s “Up in Smoke,” and “The Texas Chainsaw Massacre.” Source

The head of Russia’s Nuclear, Biological, and Chemical Defense Forces, Lt. General Igor Kirillov, was killed along with his deputy in an explosion in Moscow, Russian investigators say. Ukraine clams it was behind the blast. Source

A powerful earthquake hit the Pacific island nation of Vanuatu, damaging buildings in the capital, Port Vila, including one housing the U.S. Embassy. A witness said bodies were seen in the city. Source

Lindsey Reiser reports on the investigation into a fatal school shooting in Wisconsin, the biggest takeaways from President-elect Trump’s first post-election press conference, and the top health stories that defined 2024. Source

Milei is the first world leader expected to be in Washington, D.C. for President-elect Donald Trump’s inauguration, though arrangements are underway for others to join. Source

2024 was a year of historic health headlines. From Ozempic to E. coli, CBS News medical contributor Dr. Céline Gounder joins to look back at the medical stories that defined the year. Source

Several lawmakers are calling for updated policies to help federal agencies investigate and respond to recent drone sightings. The proposals from leaders in New Jersey, New York and Pennsylvania come as the mysterious flying objects have been repeatedly spotted in at least half a dozen states. CBS News congressional correspondent Scott MacFarlane has the latest. Source

Trump’s lawyers said his conviction in state court should not stand because he was elected president after his conviction. Source

According to a Pew Research report, nearly half of American teenagers say they are online “almost constantly.” YouTube tops the list with 90% of respondents saying they use that platform the most, followed by TikTok, Instagram and Snapchat. Psychologist Lisa Damour joins CBS News to unpack the findings. Source