Charles Darwin is an international celebrity, but Gregor Mendel holds the key to heredity.
Lisa Jardine describes how Britain's desire to build an empire promoted botany.
Melvyn Bragg and his guests discuss the work of the biologist Alfred Russel Wallace.
Travel writer Redmond O'Hanlon champions the life of naturalist Alfred Russel Wallace.
Brian Cox and Robin Ince mark the 100th anniversary of the death of Alfred Russel Wallace.
Travel writer Redmond O'Hanlon proposes the pioneering naturalist Alfred Russel Wallace.
George Beccaloni on why naturalist Alfred Russel Wallace is his Natural History Hero.
Helen Grady profiles the prize-winning scientist Professor Sir Andre Geim.
The row that exploded between Eddington and Chandrasekhar over the death of stars.
Melvyn Bragg and his guests discuss the life and work of Benjamin Franklin.
Melvyn Bragg tells the story of the Nobel-winning physicists William and Lawrence Bragg.
Media executive and broadcaster Greg Dyke chooses explorer Captain James Cook.
How the Gaussian or normal distribution underpins modern medicine.
Melvyn Bragg and guests discuss Gauss, one of the great mathematicians.
Businessman and academic Adair Turner talks about the life of Charles Darwin.
Businessman and academic, Adair Turner looks at 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.
Thomas Dixon explores the origins of the idea of friendships between humans and animals.
One of the most successful chemists of the 20th century.
Eddie Redmayne interviewed by Sanjeev Bhaskar.
Dr Craig Venter on his own experiences as a collector, medic and geneticist.
BBC Radio 4 pays tribute to Prof Stephen Hawking.
A portrait of Dorothy Hodgkin, the only female British scientist to win a Nobel Prize.
Dorothy Hodgkin and her lover wrestle with the internal structure of complex molecules.
In the 1940s, Dorothy made more scientific strides even with a baby.
Dorothy's reputation grew post-war, conquering the structure of penicillin.
Dorothy becomes the first woman to receive the Nobel Prize for Chemistry in 1964.
James Naughtie profiles the molecular biologist who helped discover the structure of DNA.