Here's a glimpse of all that happened around the world last month, in 20 images.
The massacre, among the deadliest school shootings in US history, has once again sparked a debate about lax US gun laws and lawmakers' continued inaction on gun control.
As 2018 draws to a close and the white noise of 24-hour news cycles and Twitter storms fade into the background, it is already clear that history will remember only a handful of those people, each of whom has taught us something about ourselves and the rapidly changing world in which we live.
The students of Marjory Stoneman Douglas and other United States schools, Tim Cook, India's Indira Jaising and Mukesh Ambani. The names mentioned above have nothing in common... until now. They have all been named as Fortune's World's 50 Greatest Leaders. Here are some of the prominent names mentioned in the list.