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6/6 Aleks explores how technology can give someone back a life that had seemed gone forever.
BBC Radio 4
Why do some people have a darker outlook on life while others have a brighter one?
BBC World Service
Meteors of similar size to the Chelyabinsk event may strike Earth more frequently
A from report Kigali on how technology is transforming Africa
Chris Sperring talks to fungi expert Lynne Boddy about the weird world of fairy rings.
Jim al-Khalili discusses digging up dinosaurs in remote places with Professor Mike Benton
Dr Lucie Green on putting your sequenced DNA, your personal genome, on the internet.
Helen Mark joins geocachers from around the world discovering the Salcey Forest.
Laurie Taylor discusses the first biography of this leading cultural commentator.
4/4 Michael Blastland asks if finding something disgusting influences moral judgement.