Fifty German cows, possibly weary of being exploited by humans, conspired in Rasdorf, Germany to blow up a barn. They apparently coordinated their burping and farting to create a critical quantity of methane gas, then caused a spark, and poof! (h/t Euronews)
One cow was treated for burns.
There is no word whether Al Qaeda was involved, but it is feared that the cows have a stash of guns somewhere and may be plotting something worse than a barn roof-raising.