In a crime that scandalized Russia and made headlines around the world, Sergei Filin, the artistic director at the famed Bolshoi Ballet, is attacked with acid outside his home in Moscow on January 17, 2013. A dancer at the ballet, Pavel Dmitrichenko, was later convicted for ordering the attack, which revealed deep divisions within the ballet company.

In February of 2013, Netflix introduced "[House of Cards](http://In February of 2013, Netflix introduced House of Cards, the first major TV show that ran exclusively on a streaming service. It was another Netflix innovation that would alter the media landscape.)," the first major TV show that ran exclusively on a streaming service. It was a Netflix innovation that would alter the media landscape.

On February 28, 2013, less than three weeks after making the unexpected announcement that he would step down, 85-year-old Pope Benedict XVI officially resigns. Citing advanced age as the reason for giving up his post as the leader of the 1.2 billion-member Roman Catholic Church, Benedict was the first pontiff to relinquish power in nearly 600 years. Two weeks after Benedict resigned, Cardinal Jorge Mario Bergoglio, the archbishop of Buenos Aires, was elected pope.

On April 4, 2013, one of America’s best-known and most influential movie critics, Roger Ebert, who reviewed movies for the Chicago Sun-Times for 46 years and on TV for 31 years, dies at age 70 after battling cancer. In 1975, Ebert started co-hosting a movie review program on TV with fellow critic Gene Siskel that eventually turned them both into household names and made their thumbs-up, thumbs-down rating system part of American pop culture.

Margaret Thatcher, the first female prime minister of the United Kingdom, dies in London at age 87 from a stroke on April 8, 2013. Serving from 1979 to 1990, Thatcher was the longest-serving British prime minister of the 20th century. She curbed the power of Britain’s labor unions, privatized state-owned industries, led her nation to victory in the Falklands War and as a close ally of U.S. President Ronald Reagan played a pivotal role in ending the Cold War. A polarizing figure, Thatcher, nicknamed the Iron Lady, was credited by her admirers with championing free-market, conservative policies that revitalized the British economy, while critics charged these initiatives hurt the nation’s lower classes.

On April 15, 2013, two bombs go off near the finish line of the Boston Marathon, killing three spectators and wounding more than 260 other people in attendance. Four days later, after an intense manhunt that shut down the Boston area, police captured one of the bombing suspects, 19-year-old Dzhokhar Tsarnaev; his older brother and fellow suspect, 26-year-old Tamerlan Tsarnaev, died following a shootout with law enforcement earlier that same day.

On May 6, 2013, three women are rescued from a Cleveland, Ohio, house where they had been imprisoned for many years by their abductor, 52-year-old Ariel Castro, an unemployed bus driver. The women—Michelle Knight, Amada Berry and Gina DeJesus—went missing separately between 2002 and 2004, when they were 21, 16 and 14 years old, respectively. Also rescued from the house was a 6-year-old girl born to Berry while she was being held captive and fathered by Castro.

On June 5, 2013, Americans learned that their government was spying broadly on its own people.

On June 19, 2013, James Gandolfini, the actor best known for his role as New Jersey crime boss Tony Soprano on the TV series “The Sopranos,” which debuted in 1999 and ran for six seasons, dies of a heart attack while vacationing in Rome, Italy. He was 51.

On June 23, 2013, 34-year-old aerialist Nik Wallenda becomes the first person to walk a high wire across the Little Colorado River Gorge near Grand Canyon National Park in Arizona. Wallenda wasn’t wearing a safety harness as he made the quarter-mile traverse on a 2-inch-thick steel cable some 1,500 feet above the gorge. In June of the previous year, Wallenda, a member of the famous Flying Wallendas family of circus performers, became the first person to walk a tightrope over Niagara Falls.

Outraged and saddened after the acquittal of George Zimmerman, the Florida man who killed a Black teenager in 2012, Oakland, California resident Alicia Garza posts a message on Facebook on July 13, 2013. Her post contains the phrase "Black lives matter," which soon becomes a rallying cry and a movement throughout the United States and around the world.

Weighing in at a healthy 8 pounds, 6 ounces, the first child of the Duke and Duchess of Cambridge (more informally known as Prince William and Kate Middleton), is born on July 22, 2013, at St. Mary’s Hospital in London, England.

On September 2, 2013, 64-year-old Diana Nyad becomes the first person to swim from Cuba to Florida without the use of a shark cage for protection. Nyad completed the 110-mile swim from Havana to Key West, through the jellyfish-and shark-infested waters of the Straits of Florida, in approximately 53 hours.

On September 16, 2013, a 34-year-old man goes on a rampage at the Navy Yard in Washington, D.C., killing 12 people and wounding several others over the course of an hour before he is fatally shot by police. Investigators later determined that the gunman, Aaron Alexis, a computer contractor for a private information technology firm, had acted alone.

On December 5, 2013, Nelson Mandela, the former activist who overcame a nearly three-decade prison stint to become president of South Africa, passes away after years of struggling with health issues. He was 95.