From Helen Keller to Frank Sinatra to Carrie Fisher, even the biggest celebrities needed a little love from their dogs.

While Christine Jorgensen wasn't the first person to undergo gender reassignment surgery, she was the first to be famous for it. This is her story.

During the Christmas Truce of 1914, British and German soldiers sang carols, exchanged gifts, and supposedly even played a soccer game.

With toxic saliva, fang-teeth, and retractable jaws, you'll wish you never have to come face to face with these terrifying creatures.

Go inside the complicated history of what year it is right now, according to the cultures and religions that don't follow the Gregorian calendar.

In 1917, Dutch exotic dancer Mata Hari was executed by the French for working with the Germans. But her apparent role as a double agent remains unclear to this day.

Ever since they were deserted, these abandoned airports have all sat empty. Eerily, some of them were never used at all.

Though he refused to fire a gun, Desmond Doss became one of the most legendary soldiers of World War II — and saved 75 men during the Battle of Okinawa.

Humans may have threatened them with deforestation, but the internet's newfound love for the quokka is giving them a fighting chance for recovery.

An acclaimed pianist with a heart of gold, Fred Rogers' wife Joanne Rogers was the perfect complement to her beloved husband.

The Philadelphia State Hospital at Byberry tormented its patients with almost no consequences from its opening in 1911 until it was finally shut down in 1990.