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Jean Senebier and the Discovery of Photosynthesis

Jean Senebier and the Discovery of Photosynthesis

Tabea Tietz
On May 6, 1742, Swiss pastor and naturalist Jean Senebier was born. Senebier wrote extensively on plant physiology and was one of the major early pioneers of photosynthesis research. He was the first who demonstrated that green plants consume carbon dioxide and release oxygen under the influence of light. How do the Plants gain their Mass? Before Jean Senebier researched in the field of photosynthesis, other scientists had engaged in the field including Flemish chemist, physiologist,…
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biology
Santiago Ramón y Cajal and the Microscopic Structure of the Brain

Santiago Ramón y Cajal and the Microscopic Structure of the Brain

Tabea Tietz
On May 1, 1852, Spanish pathologist, histologist, neuroscientist, and Nobel laureate Santiago Ramón y Cajal was born. Cajal’s original pioneering investigations of the microscopic structure of the brain have led to his being designated by many as the father of modern neuroscience. His medical artistry was legendary, and hundreds of his drawings illustrating the delicate arborizations of brain cells are still in use for educational and training purposes. “Any man could, if he were so…
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biology
Félix d’Herelle and the Bacteriophages

Félix d’Herelle and the Bacteriophages

Tabea Tietz
On April 25, 1873, French-Canadian microbiologist Félix d’Herelle was born. D’Herelle was co-discoverer of bacteriophages (viruses that infect bacteria) and experimented with the possibility of phage therapy. D’Herelle has also been credited for his contributions to the larger concept of applied microbiology. Early Years as Autodidact Félix D’Hérelle was born in Paris, France. He attended l’Ecole Monge (Lycée Condorcet) and then the Lycée Louis-le-Grand in Paris. His father, who was 30 years…
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biology
John Muir and the U.S. National Park System

John Muir and the U.S. National Park System

Tabea Tietz
On April 21, 1838, Scottish-American naturalist and author John Muir was born. He was an early advocate of preservation of wilderness in the United States. His letters, essays, and books telling of his adventures in nature, especially in the Sierra Nevada mountains of California, have been read by millions. His activism helped to preserve the Yosemite Valley, Sequoia National Park and other wilderness areas. John Muir – Early Years John Muir was…
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biology
Gregory Pincus and the Contraceptive Pill

Gregory Pincus and the Contraceptive Pill

Tabea Tietz
On April 9, 1903, American biologist and endocrinologist Gregory Goodwin Pincus was born. Pincus’ work on the antifertility properties of steroids led to the development of the first effective oral contraceptive: the birth-control pill. Gregory Pincus – Youth and Education Gregory Pincus was born in Woodbine, New Jersey and received a bachelor’s degree in agriculture from Cornell University. He became an instructor in zoology at Harvard University while also working toward his…
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biology
Walter Sutton developed the Chromosome Theory

Walter Sutton developed the Chromosome Theory

Tabea Tietz
On April 5, 1877, American geneticist and physician Walter Stanborough Sutton was born. Sutton’s most significant contribution to present-day biology was his theory that the Mendelian laws of inheritance could be applied to chromosomes at the cellular level of living organisms. This is now known as the Boveri-Sutton chromosome theory. He furthermore provided the first conclusive evidence that chromosomes carry the units of inheritance and occur in distinct pairs. “I may finally…
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biology
Richard Dawkins and the Selfish Gene

Richard Dawkins and the Selfish Gene

Tabea Tietz
On March 26, 1941, English ethologist, evolutionary biologist and author Richard Dawkins was born. Dawkins first came to prominence with his 1976 book The Selfish Gene, which popularised the gene-centred view of evolution and introduced the term meme. With his book The Extended Phenotype (1982), he introduced into evolutionary biology the influential concept that the phenotypic effects of a gene are not necessarily limited to an organism’s body, but can stretch far into the…
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biology
Entomologist and Myrmecologist William Morton Wheeler

Entomologist and Myrmecologist William Morton Wheeler

Tabea Tietz
On March 19, 1865, American entomologist William Morton Wheeler was born. Wheeler published extensively on the classification, structure and behaviour of ants, on which he was a recognized world authority. Wheeler also wrote on problems of embryology, evolution, parasitism and the social life of animals in general. “But if the ants are not despondent because they have failed to produce a new social invention or convention in 65 million years, why should we be…
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biology
René Dubos and the Discovery of Antibiotics

René Dubos and the Discovery of Antibiotics

Harald Sack
On February 20, 1901, French-born American microbiologist, experimental pathologist, environmentalist, humanist, and winner of the Pulitzer Prize René Jules Dubos was born. Dubos is credited for having made famous Jacques Ellul‘s environmental maxim, “Think globally, act locally” (penser global, agir local). In Research, he is best known for his pioneer work in isolating antibacterial substances from certain soil microorganisms and the discovery of major antibiotic. Becoming a Microbiologist Dubos was born in…
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biology
Jan Swammerdam – Dutch Naturalist and Microscopist

Jan Swammerdam – Dutch Naturalist and Microscopist

Tabea Tietz
On February 12, 1637, Dutch biologist and microscopist Jan Swammerdam was born. He was one of the first people to use the microscope in dissections, and his techniques remained useful for hundreds of years. Swammerdam’s work on insects demonstrated that the various phases during the life of an insect — egg, larva, pupa, and adult — are different forms of the same animal. In 1658, he was the first to observe and describe red…
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