Biological Scientists Timeline

William Harvey

Jan 1, 1628

1628-published a book on the way the heart beats and the circulation of blood

Robert Hooke

Dec 11, 1665

1665-observed small structures in cork through a microscope. He called them cells.

Edward Jenner

May 14, 1796

May 14, 1796-Jenner tested his hypothesis on whether or not cowpox could protect a person from smallpox. 1890-smallpox vaccination was pioneered by Jenner and became eradicated all over the world.

Thomas Malthus

Dec 11, 1798

1798-had a theory on population growth and studied it.

Charles Darwin

Dec 11, 1842

1842-came up with a theory of how organisms can evolve and adapt to the environment they are in and that we come from one common ancestor

Florence Nightengale

Jan 1, 1854

1854-she made the cleanliness and sterilization in war zones and hospitals better to help reduce the health rate

Louis Pasteur

Jan 1, 1862

Solved myth of spontaneous generation in 1862. He also contributed to the making of the first vaccines.

Gregor Mendel

Dec 11, 1863

1863-used pea plants in his experiments and discovered how genetics work. Considered Father of Genetics

Joseph Lister

Jan 1, 1869

1869-contributed to modern and antiseptic surgery. Also made an antiseptic medicine

Clara Barton

Jan 1, 1881

1881- forms the American Red Cross

Robert Koch

Mar 24, 1882

March 24, 1882-studied tuberculosis and made announcement that tuberculosis was caused by bacteria.

Paul Ehrlich

Jan 1, 1908

1908-developed an immunity unit for diphtheria antitoxin and researched about chemotherapy and autoimmunity

Linus Pauling

Dec 11, 1919

1919-studied molecular structure and the nature of the chemical bond.

Sir Alexander Fleming

Jan 1, 1928

1928-he discovered penicillin working with mold that contaminated a petri dish

Dr.Charles Drews

Jan 1, 1940

1940-he found a way to form blood plasma by not killing the cells and then it could be used in transfusions

Oswald Avery

Dec 11, 1944

1944-discovered with help that DNA is the material from which genes and chromosomes are made

Jonas Salk

Jan 1, 1952

1952-came up with the first polio vaccine.

Francis Crick

Dec 11, 1953

1953-co-discoverer of the DNA molecule

Maurice Hilleman

Dec 11, 1957

1957-identified a new influenza A virus, it caused a pandemic.

Albert Sabin

Jan 1, 1961

1961-Came up with the first oral vaccine for the polio virus