World leaders are set to gather this week in Davos, Switzerland. One topic is “Disease X” – a hypothetical virus 20 times deadlier than COVID-19. Infectious disease specialist Dr. Amesh Adalja joins CBS News to discuss the threat. Source

Only three candidates are left in the GOP presidential field, but they are not all equal. CBS News political correspondent Caitlin Huey-Burns and CBS News chief election and campaign correspondent Robert Costa have details. Source

Four new species of octopus, one dubbed the dorado octopus, were found in the ocean off Costa Rica. Source

Cross-country storms have caused nearly 8,000 flight delays and more than 2,300 cancellations. CBS News national correspondent Nikki Battiste reports from LaGuardia Airport in New York City. Source

Heuermann was charged last summer with killing three women whose bodies were found along Gilgo Beach in 2010. Source

Former President Donald Trump attended the start of a second E. Jean Carroll defamation trial in New York City. CBS News campaign reporter Katrina Kaufman discusses what’s at stake for Trump. Source

Brothers John and Vince Giovannitti serve as mayors of Paulsboro and Greenwich Township, New Jersey. Source

The U.S. carried out a third round of strikes against Iranian-backed Houthi rebels in Yemen on Tuesday. The U.S. military said fighter jets targeted anti-ship ballistic missiles. Charlie D’Agata has more. Source

The man accused of killing three women on New York’s Long Island was formally indicted for the alleged murder of a fourth victim on Tuesday. CBS New York’s Carolyn Gusoff has the details. Source

“If you’re bundled up, and you find that it’s too cold and you can’t handle it any longer, your dog probably can’t either,” one veterinarian said. Source