biology

A. E. Douglass and the Dendrochronology

A. E. Douglass and the Dendrochronology

Drill to take samples for dendrochronology from trees Image by Wikimedia User Hannes Grobe On July 5, 1867, American astronomer and archeologist A. E. (Andrew Ellicott) Douglass was born. He coined the name dendrochronology for tree-ring dating, a field he originated while working at the Lowell Observatory, Flagstaff, Arizona, by his discovery a correlation between tree rings and the sunspot cycle. A. E. Douglass was not the first, who suggested that a tree’s…
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Rembert Dodoens and the Love for Botanical Science

Rembert Dodoens and the Love for Botanical Science

Rembert Dodoens (1516–1585) On June 29, 1516, Flemish physician and botanist Rembert Dodoens (Dodonaeus) was born. His seminal work Stirpium historiae pemptades sex sive libri XXX (1583) is considered one of the foremost botanical works of the late 16th century. He divided plants into 26 groups and introduced many new families. Rembert Dodoens was born under the name Rembert Van Joenckema in Mechelen, Spanish Netherlands, today Flanders, Belgium. Later, he changed it…
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Ernst Boris Chain and his Research on Antibiotics

Ernst Boris Chain and his Research on Antibiotics

On June 19, 1906, German-born British biochemist and Nobel Laureate Sir Ernst Boris Chain was born. He is best known for being one of the founders of chemical and medical research on antibiotics, esp. on Penicillinum. “Science, as long as it limits itself to the descriptive study of the laws of nature, has no moral or ethical quality and this applies to the physical as well as the biological sciences.” (Sir Ernst Boris Chain,…
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Barbara McClintock and Cytogenetics

Barbara McClintock and Cytogenetics

On June 16, 1902, American cytogeneticist Barbara McClintock was born. She is one of the world’s most distinguished cytogeneticists and received the 1983 Nobel Laureate in Physiology or Medicine. Maybe, first of all you might ask, what is cytogenetics. Well, cytogenetics is a branch of genetics that is concerned with the study of the structure and function of the cell, especially the chromosomes. Chromosomes, as being a single piece of coiled DNA…
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John James Audubon’s Birds of America

John James Audubon’s Birds of America

On April 26, 1785, French-American ornithologist, naturalist, and painter John James Audubon was born. He was notable for his expansive studies to document all types of American birds and for his detailed illustrations that depicted the birds in their natural habitats. His major work, a color-plate book entitled The Birds of America (1827–1839), is considered one of the finest ornithological works ever completed. Why the Heck… OK, who the heck is john James…
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The Contraceptive Pill – One of the Most Influential Inventions of the 20th Century

The Contraceptive Pill – One of the Most Influential Inventions of the 20th Century

Different kinds of birth control pillsImage: Ceridwen On August 18, 1960, the first contraceptive pill Enovid went on public sale in the U.S. But the contraceptive pill was not available to married women in all states of the U.S. until 1972. Especially the Roman Catholic Church holds a strong position against the contraceptive pill, because according to her teachings artificial contraception distorts the nature and purpose of sex. According to the Economist,…
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