Kevin Fong looks at new techniques aiming to cure all viral infections.
BBC World Service
2/2 Shahzeb Jillani explains how the 1971 war over Bangladesh shaped modern Pakistan.
Neil Nunes explores whether the earthly father of Jesus can inspire step-fathers today.
5/5 Hannah looks back over the depression and guilt that accompanied her financial disaster.
BBC Radio 4
Who is responsible for the deadly cholera outbreak in Haiti?
10/15 Dominic Sandbrook investigates the industrial action of the postmen in 1890.
How the most gruelling fell race is inspiring a composer to write a new piece of music.
30/30 Brett Westwood rounds up a busy year and revisits some key stories from Saving Species.
Alexandra Harris discusses the history of fireworks at the 2011 Free Thinking Festival.
BBC Radio 3
9/15 From 1862, the Post Office Savings Bank offers savings accounts to poorer people.