President Obama is named Time magazine's person of the year and his second inauguration is held.
Beyoncé sings at the inauguration, but she's actually faking it.
The Baltimore Ravens win Super Bowl XLVII 34-31 over the San Francisco 49ers.
Beyoncé sings at the Super Bowl, but for real this time.
Snapchat blows up and says 60 million photos are sent a day through the app.
"Harlem Shake" goes No. 1 on the Billboard Hot 100.
The papal inauguration of Pope Francis is held.
Justin Bieber's monkey was taken into custody in Germany.
Jason Collins becomes the first active male professional athlete in a major North American team sport to come out.
Two pressure cooker bombs go off near the finish line of the Boston Marathon, killing three.
A tornado strikes Moore, Okla., killing more than two dozen.
The Guardian publishes an interview with former National Security Agency employee Edward Snowden, identifying him as the source of leaks about the government's top secret surveillance programs.
Woman has baby.
The Supreme Court strikes down Section 3 of the Defense of Marriage Act and let a lower-court ruling that California's Proposition 8 was unconstitutional stand.
A Florida jury finds George Zimmerman not guilty of charges in connection with the shooting of Trayvon Martin.
Woman has baby.
Dennis Rodman travels to North Korea for the second time in 2013 and visits with Kim Jong Un.
Gallup releases a poll showing 57% of college graduates are in a job that doesn't require a college degree.
President Obama asks Congress to delay a vote on whether to authorize military strikes against Syria.
Former Rep. Anthony Weiner loses his New York City mayoral bid with 4.9% of the vote.
The Affordable Care Act federal exchange website launches.
The federal government shuts down for 16 days.
Twitter goes public.
Hunger Games: Catching Fire opens in theaters, making $110.1 million, a Thanksgiving week box office record.
One Direction becomes the first group to debut at No. 1 on the Billboard 200 with its first three albums.
Britney Spears begins her two-year Las Vegas residency.
And also this year, there was this:
