Facebook has revealed it's 40 most shared stories of 2011 in a recent blog post.
Representatives for the social network said:
"The stories range from cute to thought provoking and represent the type of news people have been sharing and discovering with friends in 2011."
So why not relive some of the most talked-about events of last year and check out our run-down of the most-shared posts now...
Scientists are appealing for more people to donate their brains for research after they die.
Life on Earth may have arrived from Mars on an asteroid, scientists have claimed.
Lunar mission scheduled at the end of 2017 could find out if beer can be brewed on the moon.
A bottle used to teach children how far litter can travel ended up on Scottish beach after 8,700-mile journey.
Confused Apple customers are finding coins in their MacBooks.
High levels of iron help prevent hearing loss, a study has claimed.
A software engineer has constructed a fingernail-sized engine made of paper and it totally works!
Conspiracy theorists claim that there is a mysterious alien based pyramid in the Antarctic.
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