Five eminent thinkers speak from around the world on different aspects of the complex theme of sustainable development. They will also answer questions from the audience. The lecturers, introduced by Kate Adie, come together for a final round-table discussion hosted by the Prince of Wales.

The Rt Hon Chris Patten, Commissioner for External Affairs for the European Union, tells an invited audience at the Royal Institution in London why he believes civil society and democratic values must flourish for governments to pursue environmentally-friendly economic policies.

The lectures are published on [web address removed]
(Repeated Saturday 10.15pm)
Respect for the earth: page 26