It has been five years since a gunman killed 20 schoolchildren and six adults at Sandy Hook Elementary School in Newtown, Connecticut.
North Korea celebrates the evolution of its nuclear and missile program.
Our top environment photos from the past year.
Demonstrations are held around the world over President Donald Trump's recognition of Jerusalem as Israel's capital.
Newsmakers and celebrities who died in the past year.
Our top natural disaster photos from the past year.
Fires whipped by Santa Ana winds threaten thousands of homes in Southern California.
Doug Jones wins a bitter fight for a Senate seat in deeply conservative Alabama, dealing a political blow to President Donald Trump.
Our top sports photography of the day.