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Environmentalist Wangari Maathai, geneticist Jane Peterson and novelist Dubravka Ugresic
BBC World Service Online
Writer and critic Clive James, mathematician Marcus du Sautoy, philosopher Slavoj Zizek.
Historian of communism Archie Brown, judge Albie Sachs, literary critic Elaine Showalter.
Environmentalist Sunita Narain, science historian Arthur I Miller, writer Paolo Giordano.
Sociologist WJ Wilson, philosopher Roger Scruton, film-maker Clemens von Wedemeyer