Julia Neuberger gives a lecture about ending prejudice against Britain's senior citizens.
BBC Radio 3
1/5 Can population growth be managed if consumption and emission levels are reduced?
BBC World Service
3/5 Hita Unnikrishnan on why climate change has to be addressed at the individual level.
Lionel Kelleway searches for his own autumnal 'tufty' red squirrel in the Lake District.
BBC Radio 4
Helen Mark goes in search of the wild animals of Gloucestershire.
A debate at the 2009 Free Thinking festival asking what sort of future lies ahead for men.
AC Grayling speaks to the world's leading climate change scientist Rajendra Pachauri.
Lionel Kelleway explores the important benefits of ivy to British wildlife.
Psychoanalyst Michael Brearley delivers a talk about the nature of leadership.
Lionel Kelleway visits the Arne RSPB reserve in Dorset to see the rare Dartford warbler.
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