In our series The 2020s, we’re exploring the big topics that will dominate the conversation in the next decade. Dr. Jon LaPook joins “CBS This Morning” to discuss the 2020s in health, from a universal flu vaccine to artificial intelligence detecting diseases. Source

New York City Police Commissioner Dermot Shea was sworn in earlier this month after rising through the ranks over 28 years. Shea joined the NYPD in 1991 as a patrol officer in the Bronx. The city that year had more than 2,000 murders. In 2018, that number fell to 295. Commissioner Shea joins “CBS This Morning” to discuss the latest attack on a Hanukkah celebration in New York, security surrounding New Year’s Eve celebrations, and the stabbing death of college student Tessa Majors in a Manhattan park. Source

A Chinese scientist who helped create the world’s first genetically edited babies is going to prison. A judge in China sentenced He Jiankui to three years for carrying out “illegal medical practices.” Source

Thousands of students in Seattle have 10 days to get vaccinated or they will not be allowed to go to school. This comes after Washington state suffered two measles outbreaks this year, one forcing a state of emergency. This year the U.S. has seen the most measles cases in 27 years. Nearly 1,300 cases were reported through November. Carter Evans reports. Source

North Korea had ominously warned of a “Christmas gift” for the U.S., but there’s no sign of it yet Source

Seattle Public Schools said roughly 2,000 students need to get vaccinated. Source

The suspect was shot by a parishioner who’s part of a volunteer security team, and several more members drew their guns as well. Source

New York’s governor called it “domestic terrorism” Source

The Iranian-backed militia targeted by the U.S. says the death toll from the strikes has risen, and Tehran is calling them an “obvious cased of terrorism.” Source

The oldest-ever ex-president was at services in his hometown of Plains, Georgia along with his wife of 70 years, Rosalynn. Source