New Year's Eve Live: Anderson Cooper Unleashes "Giggles" Onslaught

What were the big breaks that authorities say led them to the suspected gunman in the deadly shooting at Brown University and the murder of an MIT professor? CNN's Danny Freeman has the details. | Anderson Cooper 360

CNN's Ed Lavandera looks at the data center explosion linked to the rise of AI and the "not in my backyard" push in some locations over worries that they use too much water and electricity. | Anderson Cooper 360