Homepage
Accessibility links
Skip to content
Accessibility Help
BBC Account
Notifications
Home
News
Sport
Weather
iPlayer
Sounds
Bitesize
CBeebies
CBBC
Food
Home
News
Sport
Business
Technology
Health
Culture
Arts
Travel
Earth
Audio
Video
Live
More menu
Search Sounds
Home
News
Sport
Weather
iPlayer
Sounds
Bitesize
CBeebies
CBBC
Food
Home
News
Sport
Business
Technology
Health
Culture
Arts
Travel
Earth
Audio
Video
Live
Close menu
BBC Sounds
Sounds home page
Menu
Home
Music
Podcasts
My Sounds
Episode details
World Service
,
·
29 Aug 2011
,
·
17 mins
29/08/2011 GMT
Discovery
Play
Bookmark
Bookmark
Subscribe
Subscribe
Available for over a year
Explorations in the world of science.
Programme Website
More episodes
Cymraeg
Gaeilge
Gàidhlig
BBC Sounds Help
Contacts, Privacy and Information
Help with Signing In
Newsletter
