The Guardians of Knowledge have assembled.
1,000 people from 90 different countries are meeting in Hong Kong this week to discuss the future of Wikipedia, the world's most popular encyclopedia.
Wikimania brings together Wiki-staffers, editors and other information junkies for a series of talks that will determine how information is gathered, posted and digested by Wikipedia's hundreds of millions of users.
The online encyclopedia currently offers 30 million articles in 286 languages.
Which brings us to tonight's number: 7,000 pounds.
According to CW39's SciGuy Eric Berger, that is how much Wikipedia weighs.
Berger estimates the online encyclopedia is made up of 2.4 billion words which, if published as a traditional encyclopedia, would equal 1,800 volumes.