13/08/2011 GMT
It's 50 years since the Berlin Wall went up: what kinds of walls separate the inner workings of science, history, and graffiti art?
As we mark 50 years since the Berlin Wall went up, we consider barriers around the world and across disciplines.
Can 'guerrilla photo-art' help bring down some of the most politically charged divisions in the Middle East?
In genetics, what is the nature of the biological barriers that keep species separate?
And what can history tell us about the different uses of ancient city walls?
This week's Forum guests are historian of France and the Ottoman Empire Philip Mansel, Professor of Genomics Chris Ponting, and award winning French artist and "photograffeur" JR.
Illustration by Charlotte Kingston: "In this same interlude it doth befall, That I, one Snout by name, present a wall鈥� Hang on, I'm not the only one confronting boundaries."
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Chapters
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JR
JR: Pasting giant portraits onto the walls
Duration: 14:42
Philip Mansel
Philip Mansel: City walls of the past and present
Duration: 08:18
60 second idea
60 second idea: Give up electricity for a day
Duration: 05:13
Chris Ponting
Chris Ponting: Genetic boundaries between species
Duration: 12:16
Broadcasts
- Sat 13 Aug 2011 08:05GMT大象传媒 World Service Online
- Sat 13 Aug 2011 21:05GMT大象传媒 World Service Online
- Sun 14 Aug 2011 01:05GMT大象传媒 World Service Online
- Sun 14 Aug 2011 14:05GMT大象传媒 World Service Online
Do you think political or business leaders need to be charismatic? Or do you prefer highly competent but somewhat stern people?
We鈥檇 love to hear your views on charm and charisma for a future Forum.
Podcast
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The Forum
The programme that explains the present by exploring the past
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