Physical and mathematical scientists

Marinella Mazzanti

Marinella Mazzanti is an Italian inorganic chemist who founded the Group of Coordination Chemistry at EPFL in 2014 and reported the first molecular uranium catalyst converting nitrogen to ammonia.

Mario Acuña

Mario Acuña (1940–2009) was an Argentine-born American space physicist at NASA's Goddard Space Flight Center who measured the magnetic fields of Jupiter, Saturn, and Mars.

Mario Amadori (1886–1941) was an Italian chemist, professor of pharmaceutical chemistry at the University of Modena, whose 1925 Amadori rearrangement, a key Maillard reaction step, is now studied in foods, diabetes, and aging.

Mario Betti

Mario Betti (1875–1942) was an Italian organic chemist whose 1900 three-component condensation, the Betti reaction, and early asymmetric synthesis work won praise from Nobel laureate Ryoji Noyori.

Mário G. Silveirinha

Mário G. Silveirinha is a Portuguese physicist working on metamaterials, plasmonics, and topological photonics, and a Full Professor at Instituto Superior Técnico, University of Lisbon.

Mario Hamuy

Mario Hamuy is a Chilean astronomer whose Calán/Tololo supernova survey contributed to the 1998 discovery of the accelerating universe; he won Chile's National Exact Sciences Prize in 2015.

Mario Leclerc

Mario Leclerc is a Canadian chemistry professor at Université Laval and a world leader in plastic electronics, known for conjugated polymers used in solar cells, LEDs, and DNA biosensors.

Mario Livio

Mario Livio, born 1945 in Bucharest, Romania, is an astrophysicist who studied supernovae at the Space Telescope Science Institute and wrote eight popular science books.

Mario Molina

Mario Molina (Mario José Molina, 1943–2020) was a Mexican atmospheric chemist who predicted in 1974 that CFCs destroy ozone, earning the 1995 Nobel Prize in Chemistry.

Mario Pieri

Mario Pieri (1860–1913) was an Italian mathematician, a major figure in the axiomatic foundations of geometry and arithmetic who reduced geometry's undefined terms to point and motion.

Mário Schenberg

Mário Schenberg, born Mário Schönberg, was a Brazilian theoretical physicist (1914–1990) who co-discovered the Urca process of stellar collapse and formulated the Schenberg–Chandrasekhar limit with Chandrasekhar.

Marion L. Jackson

Marion LeRoy Jackson (1914–2002) was an American soil scientist at the University of Wisconsin–Madison whose work in soil chemistry and clay mineralogy shaped how soils and clays are analyzed worldwide.

Marisa C. Kozlowski

Marisa C. Kozlowski is an American organic chemist at the University of Pennsylvania, known for asymmetric catalyst design and oxidative coupling, and editor-in-chief of Organic Letters since 2021.

Marissa Weichman

Marissa L. Weichman is an American experimental physical chemist and assistant professor of chemistry at Princeton University who uses light-based spectroscopy to observe reaction transition states and steer molecular processes.

Marjolein Dijkstra

Marjolein Dijkstra is a Dutch computational physicist and Professor of Computational Condensed Matter at Utrecht University, a pioneer in active particles and winner of the 2025 Physica Prize.

Mark A. Cane

Mark A. Cane is an American physical oceanographer and climate scientist at Columbia's Lamont-Doherty Earth Observatory known for the first numerical model of El Niño.

Mark A. Johnson

Mark A. Johnson (born 1954) is the Arthur T. Kemp Professor of Chemistry at Yale, known for infrared photodissociation spectroscopy of hydrated ions, elected to the National Academy of Sciences in 2014.

Mark A. Kasevich

Mark A. Kasevich is an American experimental atomic physicist and Stanford professor elected to the National Academy of Sciences in 2022, known for light-pulse atom interferometry and precision quantum sensing.

Mark A. Norell

Mark Norell (1957–2025) was an American vertebrate paleontologist and longtime curator at the American Museum of Natural History, known for work on the dinosaur–bird transition and Gobi Desert discoveries.

Mark A. Ratner

Mark A. Ratner (1942–2026) was an American theoretical chemist at Northwestern University who co-proposed in 1974 that a single molecule could act as an electronic rectifier, founding molecular electronics.

Mark A. Richards

Mark A. Richards is an American geophysicist at UC Berkeley who studies mantle convection, hotspots, and flood basalts, and served as provost at the University of Washington.

Mark Azbel

Mark Azbel, or Mark Yakovlevich Azbel (1932–2020), was a Soviet-born Israeli condensed-matter physicist known for the Azbel–Kaner cyclotron resonance and the Azbel–Hofstadter problem, and a leading refusenik who emigrated to Israel in 1977.

Mark B. Wise

Mark B. Wise (1953–2026) was a Canadian-born theoretical particle physicist who spent his career at Caltech, known for heavy quark effective theory and proposing axions as dark matter.

Mark Bailey (astronomer)

Mark Edward Bailey is an English astronomer known for work on the origin and dynamical evolution of comets, and Director of Armagh Observatory from 1995 to 2016.

Mark C. Herrmann

Mark C. Herrmann is an American plasma physicist at Lawrence Livermore National Laboratory who directed the National Ignition Facility and led the 2022 experiments achieving fusion ignition and scientific breakeven.

Mark Crimmin

Mark R. Crimmin is a British organometallic chemist and Professor at Imperial College London, known for a hexagonal planar transition-metal complex in Nature in 2019 and fluorocarbon recycling.

Mark D. Allendorf

Mark D. Allendorf is a chemist and Senior Scientist at Sandia National Laboratories in Livermore, California, who founded and co-directs HyMARC, a five-laboratory Department of Energy consortium on hydrogen storage materials.

Mark D. Kurz

Mark D. Kurz, also known as Mark Kurz, is an American isotope geochemist and Senior Scientist at Woods Hole Oceanographic Institution, known for pioneering helium isotope studies of the mantle.

Mark D. Zoback

Mark D. Zoback is an American geophysicist, emeritus professor at Stanford University, known for measuring crustal stress, fault strength, and reservoir geomechanics for energy development.