Revelers around the globe are bidding farewell Monday to a year filled with challenges to many of the world's most basic institutions, including politics, trade, alliances and religion.

By Associated Press

From a presidential meeting with North Korea, to a royal wedding that united both sides of the Atlantic, 2018 was an eventful year. Try your hand at our jam-packed quiz on this year's news.

By Dan Cooney

Gun violence, prolonged mental trauma for children and the ongoing opioid crisis were just a few of the major health stories that captured national attention this year.

By Laura Santhanam