On the 17th anniversary of the 9/11 terror attacks, we pause to remember the events of that tragic day, as well as honor the victims and the heroism of first responders.

In our continuing coverage celebrating Black History Month, discover some of the lesser-known African-American women scientists who have made groundbreaking impacts in their respective fields.

Real-life heroes Spencer Stone, Alek Skarlatos, and Anthony Sadler portray themselves in 'The 15:17 to Paris,' Clint Eastwood's retelling of how they incapacitated a crazed gunman and saved closed to 600 lives on board a train in August 2015.

Twenty years ago on January 22, 1998, Theodore J. Kaczynski pleaded guilty to his 17-year reign of bombings that resulted in multiple deaths and injuries originally attributed in the media to the “Unabomber.”

The much-anticipated second season of 'American Crime Story' examines the events leading up to Versace's death and explores the cultural context of his murder, including the homophobic climate of the 1990s.

With the premiere of A+E's documentary series 'The Menendez Murders: Erik Tells All' on November 30th, we look at the true crime case of brothers Lyle and Erik Menendez who were sentenced to life in prison for murdering their parents in 1989.

To mark the 325th anniversary of the Salem witch executions, we look back at the victims of the Salem Witch Trials and the mass hysteria that led to their deaths.

David Berkowitz, who became known as Son of Sam, went on a murderous rampage in New York City during the 1970s, taunting and insulting police, until they captured him. Here's a look at his notorious case 40 years after his arrest.

Here's a look at three women scientists who were trailblazers during a time when men dominated the field of science.

On July 19-20, 1848, the Seneca Falls Convention triggered and solidified the women's rights movement in America. We look back at the women who led the historic event and how it inspired generations of activism.

In “American Ripper,” a new eight-part series premiering on HISTORY on July 11th, the great-great-grandson of H.H. Holmes claims “America’s First Serial Killer” was London’s notorious “Jack the Ripper.”

We remember the historic uprising at the Stonewall Inn in Greenwich Village, which sparked the modern LGBT rights movement in the U.S.

Sally Ride, the first American woman in space, was born on May 26, 1951. To honor her memory, we celebrate her trailblazing achievements and the many contributions of her fellow women in space.

As a new wave of graduates steps boldly into the future, we look toward the podium to the famous figures who have delivered memorable commencement speeches.

Take a look back at the tragic unsolved murder of the six-year-old beauty queen that still captures America's attention.

To celebrate Earth Day on April 22, here's a look at the environmentalists who started the eco holiday and inspired millions to help save the planet.

March 14 honors the mathematical symbol π, known as “pi.” This year, we're adding to the celebration with a look at some brilliant female mathematicians who have crunched the numbers throughout history.

Here's a look at some of the new faces that will grace our money over the next decade.

In our continuing celebration of Women's History Month, we're taking a look at three women whose business leadership shaped history.

A look at three murders that helped improve crime reporting in the United States.

A look at how "Orange is the New Black" is the next generation’s "Golden Girls."

On this day in 2009, President Barack Obama signed The Matthew Shepard and James Byrd Jr. Hate Crimes Prevention Act into law. Here is a look at the lives of the men whose brutal murders spurred the country to take action against hate crimes in America.

Today in 1953, Dr. Alfred Kinsey released his book Sexual Behavior in the Human Female. While Kinsey is lauded as the father of American sexology, Dr. Clelia Mosher preceded him decades earlier with her groundbreaking Victorian sex survey.