Charles Darwin is an international celebrity, but Gregor Mendel holds the key to heredity.
Travel writer Redmond O'Hanlon proposes the pioneering naturalist Alfred Russel Wallace.
George Beccaloni chooses naturalist Alfred Russel Wallace as his Natural History Hero.
Brian Cox and Robin Ince mark the 100th anniversary of the death of Alfred Russel Wallace.
Travel writer Redmond O'Hanlon champions the life of naturalist Alfred Russel Wallace.
Melvyn Bragg and his guests discuss the work of the biologist Alfred Russel Wallace.
Bill Bailey and his love for Victorian naturalist Alfred Russel Wallace
Businessman and academic, Adair Turner looks at the life of Charles Darwin.
Businessman and academic Adair Turner talks about the life of Charles Darwin.
Melvyn visits Darwin's home at Down House in Kent.
Darwin's early life in Shropshire and his three years at Cambridge.
How Charles Darwin used the plants in his garden to develop his theory of evolution.
Tim Harford is joined by influential counter-insurgency expert David Killcullen.
John Blashford-Snell explains why he admires fellow explorer, Dr David Livingstone.
Helen Zaltzman and Olly Mann, meet Ben Hammersley, who coined the term 'podcast' in 2004.
Frank talks to Deborah Impiazzi, who lost her sight and with it, her job and her husband.
Frank Gardner talks to Dr Stuart Butchart about coping with a life-changing injury.
Frank Gardner talks to Tim Rushby-Smith about facing up to a life-changing accident.
Ernie Rea and guests debate the legacy of David Livingstone, 200 years after his death.
Novelist, Meg Rosoff explores the life of the Victorian travel writer Isabella Bird
The author Monica Ali champions the life of the explorer Richard Francis Burton.
The polar explorer's life is scrutinised by Rosie Boycott and his granddaughter Alexandra.
Biologist Steve Jones reflects on the legacy of the father of eugenics, Francis Galton.
Why did Darwin lose his faith?