Comedian Adam Conover has no fear of taking down society’s sacred cows. The creator and star of Tru TV’s “Adam Ruins Everything” brings his blend of truth and humor with a wide range of issues. He tackles everything from why engagement rings are a scam to why tipping should be banned, and even forensics. Conover joins “CBS This Morning: Saturday” to discuss his show. Source

Investigators search for a motive in the San Bernardino, Calif. mass shooting that left 14 people dead and 21 wounded. CBS News correspondent Carter Evans joins CBSN with the latest. Source

A recent report raised concerns that Christmas lights could slow down Wi-Fi speed, but experts say there’s little reason for homeowners to worry. KEYE-TV’s Lydia Pantazes reports. Source

Tony and Emmy Award-winning actor Mandy Patinkin plays CIA European division chief Saul Berenson in the hit series, “Homeland.” Patinkin is also the voice behind the Showtime documentary, “The Spymasters,” about the CIA. Patinkin joins “CBS This Morning” to discuss global issues, including the refugee crisis and gun violence in America. Source

Negotiators from around the world are now in the middle of two weeks of talks in Paris, trying to reach an agreement to limit global warming. President Obama spoke to “CBS This Morning” co-host Norah O’Donnell at the White House about his effort to fight climate change and hopes to leave behind a legacy. Source

The senate voted Wednesday night to repeal much of Obamacare, but it failed to pass new gun control measures. They included an expansion of background checks to gun shows and online purchases and preventing those on the terror watchlist from buying guns or ammunition. Four Republican senators voted in favor of expanded background checks, but presidential candidate Marco Rubio was not among them. Rubio joins “CBS This Morning” to discuss the issue of gun violence in the U.S. Source

The president speaks to “CBS This Morning” co-host Norah O’Donnell about trusting China to push its climate change efforts, and the importance of greater transparency and accountability of countries negotiating a global climate deal in Paris. Source

The actor tells CBS News’ Lauren Moraski what it’s like to star in the hit show about a “kooky” multi-generational family. Source

Multiple suspects dressed in black allegedly opened fire at the Inland Regional Center in San Bernardino, California. Source

As the U.S. prepares to spend special forces to Iraq and Syria to fight ISIS, it raises the question: how did the terrorist group become such a global threat? Joby Warrick is a national security reporter for The Washington Post and author of “Black Flags: The Rise Of ISIS,” and joins CBSN with more details on the man leading ISIS. Source