Scientists from Milwaukee

Lloyd Viel Berkner (February 1, 1905 in Milwaukee, Wisconsin – June 4, 1967 in Washington, D.C.) was an American physicist and engineer. He was one of the inventors of the measuring device that since has become standard at ionospheric stations because it measures the height and electron density of the ionosphere. The data obtained in the worldwide net of such instruments were important for the developing theory of short wave radio propagation to which Berkner himself gave important contributions.
Berkner was elected to the United States National Academy of Sciences in 1948.Later he investigated the development of the Earth's atmosphere. Since he needed data from the whole world, he proposed the International Geophysical Year in 1950. At that time, the IGY was the largest cooperative study of the Earth ever undertaken.
Berkner was elected a Fellow of the American Academy of Arts and Sciences and a member of the American Philosophical Society in 1956. The IGY was carried out by the International Council of Scientific Unions while he was president in 1957–1959. He was also a member of the President's Scientific Advisory Committee in 1958 while he was president of Associated Universities Inc.
In 1963, Berkner, with L.C. Marshall, advanced a theory to describe the way in which the atmospheres of the Solar System's inner planets had evolved.
Beginning in 1926, as a naval officer, Berkner assisted in the development of radar and navigation systems, naval aircraft electronics engineering, and studies that led to the construction of the Distant Early Warning system, a chain of radar stations designed to give the United States advance warning in the event of a missile attack across the North Pole. In the 50s and 60s, Berkner held intelligence clearances in the Atomic Energy Commission and other agencies. He worked with the CIA in some capacity as well, but any activities are wholly classified as of 2015.Berkner worked with Dallas community leaders to establish the Graduate Research Center of the Southwest (later renamed the Southwest Center for Advanced Studies, which would eventually become The University of Texas at Dallas).He wrote more than 100 papers and several books, including Rockets and Satellites (1958), Science in Space (1961), and The Scientific Age (1964).
In 1961, Berkner was president of the Institute of Radio Engineers.

Nevin Stewart Scrimshaw (January 20, 1918 – February 8, 2013) was an American food scientist and Institute Professor emeritus at the Massachusetts Institute of Technology. Scrimshaw was born in Milwaukee, Wisconsin. During the course of his long career he developed nutritional supplements for alleviating protein, iodine, and iron deficiencies in the developing world. His pioneering and extensive publications in the area of human nutrition and food science include over 20 books and monographs and hundreds of scholarly articles. Scrimshaw also founded the Department of Nutrition and Food Science at the Massachusetts Institute of Technology, the Institute of Nutrition of Central America and Panama, and the Nevin Scrimshaw International Nutrition Foundation. He was awarded the Bolton L. Corson Medal in 1976 and the World Food Prize in 1991. Scrimshaw spent the last years of his life on a farm in Thornton, New Hampshire, where he died at 95.

Isadore Perlman (April 12, 1915 – August 3, 1991) was an American nuclear chemist noted for his research of Alpha particle decay.

The National Academy of Sciences called Perlman "a world leader on the systematics of alpha decay".
He was also recognized for his research of nuclear structure of the heavy elements.
He was also noted for his isolation of Curium,

as well as for fission of tantalum, bismuth, lead, thallium and platinum.

Perlman discovered uses of radioactive iodine and phosphorus for medical purposes.
He played a key role in Manhattan Project's plutonium production.

Leonard Emanuel Parker (born Leonard Pearlman; in 1938) is a distinguished professor emeritus of physics and a former director of the Center for Gravitation and Cosmology at the University of Wisconsin–Milwaukee. During the late 1960s, Parker established a new area of physics—quantum field theory in curved spacetime. Specifically, by applying the technique of Bogoliubov transformations to quantum field theory with a changing gravitational field, he discovered the physical mechanism now known as cosmological particle production. His breakthrough discovery has a surprising consequence: the expansion of the universe can create particles out of the vacuum.
His work inspired research by hundreds of physicists and has been cited in more than 2,000 research papers; it was credited in the memoirs of Soviet physicist Andrei Sakharov and helped Stephen Hawking discover the creation of particles by black holes.Along with David Toms of Newcastle University, Parker co-wrote a latest addition to graduate-level textbooks on quantum field theory in curved spacetime, entitled Quantum Field Theory in Curved Spacetime: Quantized Fields and Gravity (Cambridge University Press, 2009, ISBN 978-0-521-87787-9).
He received his PhD from Harvard University in 1967. His advisor was Sidney Coleman.