Christopher Klein

While John F. Kennedy was the first Irish-Catholic president, Andrew Jackson was the first chief executive with roots in the Emerald Isle. Check out that and nine other surprising facts about “Old Hickory.”

On the centennial of the start of the Russian Revolution, explore about the tumultuous events of 1917 as witnessed by Americans and other expatriates living in the capital

On what would have been his 170th birthday, explore 10 surprising facts about the widely acknowledged inventor of the telephone.

As Presidents' Day approaches, two preeminent historians join the enduring debate about whether George Washington or Abraham Lincoln was America’s greatest president.

On the 150th anniversary of Laura Ingalls Wilder’s birth, learn about her secret collaborator on the popular “Little House on the Prairie” books and her Libertarian Party connections.

As Lady Gaga prepares to headline the Super Bowl LI halftime show, look back at 10 of the most forgettable performances during the NFL’s championship game.

When NASA’s first fatal spacecraft accident occurred 50 years ago, it happened not in deep space but right on the launch pad.