1904

The Society's Tropical Diseases Committee begins to research malaria and other ailments, particularly in Africa. As a result, Sir David Bruce elucidates the role of the tsetse fly in sleeping sickness.

1919

Astronomers confirm general relativity theory to the Royal Society using observations made during the total eclipse of this year. Albert Einstein is elected to the Fellowship in 1921.

1932 

James Chadwick detects the neutron, and publishes his findings with the Royal Society. Soon, neutron bombardment of uranium will release the power of the atom.

1936

Sigmund Freud is elected to the Fellowship.

1953

Francis Crick and James Watson determine the structure of DNA, detailing their breakthrough in a paper to the Royal Society. It is the secret of life, radically changing science for decades to come.

1956

The Royal Society establishes a research base at Halley Bay, Antarctica. Here in 1985, dramatic losses in the ozone layer are observed and the base remains an important location for climate research.

1964

Dorothy Hodgkin becomes Britain's only female Nobel Prize winning scientist. Her x-ray crystallography work on penicillin and vitamin B12 had long been nurtured by the Royal Society.

1971

The Society begins research on Aldabra Atoll in the Indian Ocean having protected this frail ecological system from military development. It becomes part of the Seychelles and in 1982 a World Heritage Site.