To celebrate 2013, YouTube invited some of its most popular contributors to star in a mashup of popular moments this year. Can you spot all the references?
Single-use plastic bags will disappear from California grocery stores under a first-in-the-nation state law.
A look back on this day in Hollywood history.
Microsoft announced its new operating system to replace the largely unpopular Windows 8.
Think you're a "Harry Potter" superfan? This man lives in Hogwarts heaven and has the Guinness record to prove it.
Lawmakers scolded the head of the Secret Service over a security breach that allowed a knife-wielding intruder to run deep into the White House.