With 48 hours of video uploaded every minute and 3 billion videos watched every day, YouTube has come a long way since one of the site’s co-founders, Jawed Karim, uploaded the first video of himself talking about elephants at the zoo almost 7 years ago.

From the world’s largest library of online videos, here are several of the best YouTube channels for librarians.

Source: oedb.org

Loading the player...

See more of this Expert Series

The Grovo.com Expert Series features Jordan Franklin of Clickable. 

Source: grovo.com

How to make magnetic fluid, ferrofluid. 

Making of Batelco INFINITY

Batelco - INFINITY

The Outfield Rare UK Newsclip 1985

Danny MacAskill, Hans Rey and Steve Peat Adventure

Golfers Brave Shark-Infested Course!

Viatask Taskrabbit competitor

"],["_trackPageview"]]; (function(d,t){ var g=d.createElement(t), s=d.getElementsByTagName(t)[0]; g.async=1; g.src=("https:"==location.protocol?"//ssl":"//www")+".google-analytics.com/ga.js"; s.parentNode.insertBefore(g,s) }(document,"script"));