Members of the German National Academy of Sciences Leopoldina

Hans Albrecht Bethe (German pronunciation: [ˈhans ˈbeːtə] ; July 2, 1906 – March 6, 2005) was a German-American theoretical physicist who made major contributions to nuclear physics, astrophysics, quantum electrodynamics, and solid-state physics, and who won the 1967 Nobel Prize in Physics for his work on the theory of stellar nucleosynthesis. For most of his career, Bethe was a professor at Cornell University.During World War II, he was head of the Theoretical Division at the secret Los Alamos laboratory that developed the first atomic bombs. There he played a key role in calculating the critical mass of the weapons and developing the theory behind the implosion method used in both the Trinity test and the "Fat Man" weapon dropped on Nagasaki in August 1945.
After the war, Bethe also played an important role in the development of the hydrogen bomb, although he had originally joined the project with the hope of proving it could not be made. Bethe later campaigned with Albert Einstein and the Emergency Committee of Atomic Scientists against nuclear testing and the nuclear arms race. He helped persuade the Kennedy and Nixon administrations to sign, respectively, the 1963 Partial Nuclear Test Ban Treaty and 1972 Anti-Ballistic Missile Treaty (SALT I).
His scientific research never ceased and he was publishing papers well into his nineties, making him one of the few scientists to have published at least one major paper in his field during every decade of his career, which in Bethe's case spanned nearly seventy years. Freeman Dyson, once his doctoral student, called him the "supreme problem-solver of the 20th century".

Osamu Hayaishi MJA (早石 修, Hayaishi Osamu, January 8, 1920 – December 17, 2015), was a Japanese biochemist, physiologist, and military physician. He discovered Oxygenases at the National Institute of Arthritis and Metabolic Diseases, National Institutes of Health in 1955.Citing his "outstanding and pioneering contributions to biomedical sciences and enzymology," the Wolf Foundation awarded Hayaishi the 1986 Wolf Prize in Medicine "for his discovery of the oxygenase enzymes and elucidation of their structure and biological importance".Hayaishi was President of International Union of Biochemistry and Molecular Biology from 1973 to 1976.

Nathan Zuntz (6 October 1847, in Bonn – 22 March 1920, in Berlin) was a German physiologist born in Bonn. He was a pioneer of modern altitude physiology and aviation medicine.

Karl Koester (born 2 April 1843 in Bad Dürkheim, died 2 December 1904 in Bonn) was a German pathologist and rector of the University of Bonn from 1898 to 1899. He was professor of pathology and director of the Institute of Pathology at the University of Bonn from 1874 to 1904. He held the title Geheimer Medizinalrat.
Koester studied medicine in Munich, Tübingen and Würzburg, and obtained his doctoral degree in Würzburg in 1867. His doctoral advisor and mentor was Friedrich Daniel von Recklinghausen, and he subsequently worked as Recklinghausen's assistant. From 1873 to 1874 he was professor of general medical pathology and anatomical pathology at the University of Giessen. He succeeded Eduard von Rindfleisch as professor of pathology at the University of Bonn in 1874.
In 1868 he published Ueber die feinere Structur der menschlichen Nabelschnur ("On the finer structure of the human umbilical cord").He became a member of the German National Academy of Sciences Leopoldina in 1880.

Gabriel Bertrand (born 17 May 1867 in Paris, died 20 June 1962 in Paris) was a French pharmacologist, biochemist and bacteriologist.
Bertrand introduced into biochemistry both the term “oxidase” and the concept of trace elements.
The laccase, a polyphenol oxidase and an enzyme oxidating urishiol and laccol obtained from the lacquer tree, was first studied by Gabriel Bertrand in 1894.Bertrand's rule refers to the fact that the dose–response curve for many micronutrients is non-monotonic, having an initial stage of increasing benefits with increased intake, followed by increasing costs as excesses become toxic. In 2005, Raubenheimer et al. fed excess carbohydrates to Spodoptera littoralis and extended Bertrand's rule to macronutrients.In 1894, with Césaire Phisalix, he developed an antivenom for use against snake bites.Bertrand was made a member of the Académie Nationale de Médecine in 1931. In 1932 he became foreign member of the Royal Netherlands Academy of Arts and Sciences.

Andreas Franz Wilhelm Schimper (12 May 1856 – 9 September 1901) was a German botanist and phytogeographer who made major contributions in the fields of histology, ecology and plant geography. He travelled to South East Asia and the Caribbean as part of the 1899 deep-sea expedition. He coined the terms tropical rainforest and sclerophyll and is commemorated in numerous specific names.

Adolf Philipp Wilhelm Bastian (26 June 1826 – 2 February 1905) was a 19th-century polymath best remembered for his contributions to the development of ethnography and the development of anthropology as a discipline. Modern psychology owes him a great debt, because of his theory of the Elementargedanke, which led to Carl Jung's development of the theory of archetypes. His ideas had a formative influence on the "father of American anthropology" Franz Boas, and he also influenced the thought of comparative mythologist Joseph Campbell.

Franz Karl Achard (28 April 1753 – 20 April 1821) was a German (Prussian) chemist, geoscientist, physicist, and biologist. His principal discovery was the production of sugar from sugar beets.