The Internet Archive discovers and captures web pages through many different web crawls.
At any given time several distinct crawls are running, some for months, and some every day or longer.
View the web archive through the Wayback Machine.
What's happening this week on the Real-Time Twitter Chart? Joe Levy takes a little trip to the East River in celebration of spring on Episode 40, which features Rihanna and an exclusive Q&A with the Janoskians.