Chase DoakSpy BalloonAnother Chinese 'surveillance balloon' is flying over Latin America, Pentagon saysBlinken postpones high-stakes Beijing trip after suspected Chinese spy balloon spotted over the U.S. Surveillance or weather research? Balloon blows U.S.-China diplomacy off course
Charles Krupa / APArctic blastWind chills in New England are so low, they're literally off the charts Artic blast could trigger a rare weather phenomenon: Frost quakes
J. Scott Applewhite / APCongressHouse Judiciary subpoenas attorney general, FBI chief and education secretary
LionessArising / via YouTubeFamily suicideFamily found dead in Pennsylvania made a 'joint decision' to kill themselves, police say
Chelsea Stahl / NBC NewsDallas Zoo mysteryA death, an escape and a burglary: Even with an arrest, answers hard to come by in Dallas Zoo crimes Aquarium staff was on alert for Dallas Zoo suspect when they spotted him visiting
Justin Hayworth / Grinnell CollegeBlack HistoryShe was an education pioneer. At 108, Edith Renfrow Smith shares her life lessons.Our reporter spent the night at a former plantation that now invites visitors to confront a painful past. Here's what he saw.