Do negative interactions lead to negative emotions, or can arguing on the internet actually be positive for people's mental health?
Great news for fans of not being eaten alive, less good news for the clumsy and slow.
As the BBC reports that it can receive up to 10,000 pieces of user-generated content on a single day, Vicky Baker looks at the increasing need for verification and how propaganda and hoaxes have become more prevalent.
Can drugs help depression? Crowdfunding allows science researchers to bypass institutional reservations and study taboo subjects.
So much for being special.
The social network's giving its "elite" users more control over whose tweets they have to pay attention to.
Mars' moons are unusual in the Solar System - for their size, shape and colour from their parent planet. Where did they come from? We've got some clues to work with.
Don't trust everything you read.
This month, researchers are gathering in Cambridge to try and work out why we hurt. Michael Brooks weighs up one suggestion.
In this week's Health Matters, a man finds he has been hurt on the way home - and Phil Whitaker suggests sometimes the best thing to do is move on.
Secret oceans on the moons Enceladus and Ganymede were discovered within days of each other, reshaping our belief that the Earth is the Solar System's most watery, life-friendly habitat.
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