The $4.4 billion Large Haldron Collider has been shut down by a wandering weasel which managed its way into the collider's 66kV transformer and was promptly fried.
The collider is expected to be up and running in a few days.
http://www.bbc.com/news/world-europe-36173247 [bbc.com]
http://phys.org/news/2016-04-weasel-large-hadron-collider.html [phys.org]