Anyone who wants to understand Vladimir Putin needs to know what happened to him on a night in Dresden in 1989.
Reviving the only concert piano in a territory of 1.8m people
Why a long night's sleep may be worse for you than a short one
Need an answer to annoying questions about your love life? The BBC looks at an app providing a "perfect solution".
David Cameron and Ed Miliband were grilled live on Thursday night - what can Twitter and Facebook tell us about the result?
Media reports were aghast at the abuse directed at Oisin Tymon - but thousands came to his defence on Twitter.