Just who are the militia men, and why have they taken this stand against the government?

And it generates more than $150 billion each year.

When the judge handed down Holtzclaw's verdict, the former Oklahoma police officer wept in disbelief. "How could you do this?" Holtzclaw asked, maintaining his innocence to this day.

Long before ISIS, this man was the U.S.'s primary enemy in the Middle East. And this is how he met his end.

See the chilling terrorism timeline of the last 15 years as an animated map.

From dictators to crooked politicians to war criminals, the magazine hasn't always chosen someone who's made the world a better place.

Apollo 17 launched 43 years ago with the crew of the last men to land on the Moon. Their legacy, and the future of Moon missions, is still being written.

And it might change the entire way the world fights against them.

Discover the heartwarming history of the 83-year-old tradition.

Enos became the first animal to orbit Earth in an American vessel in 1961 and his trip paved the way for further space exploration.

From multiple bachelors and graduate degrees to serving in World War 1. The multilingual mathematician, physicist, and astronomer led quite the life.