Alexander Stewart Herschel, DCL, FRS (5 February 1836 – 18 June 1907) was a British astronomer.
Although much less well known than his grandfather William Herschel or his father John Herschel, he did pioneering work in meteor spectroscopy. He also worked on identifying comets as the source of meteor showers. The Herschel graph, the smallest non-Hamiltonian polyhedral graph, is named after Herschel due to his pioneering work on Hamilton's Icosian game.
John Scales Avery (May 26, 1933 – January 4, 2024) was an American theoretical chemist noted for his research publications in quantum chemistry, thermodynamics, evolution, and history of science. Since the early 1990s, Avery had been an active world peace activist. During these years, he was part of a group associated with the Pugwash Conferences on Science and World Affairs. In 1995, this group received the Nobel Peace Prize for their efforts. He was an Associate Professor in quantum chemistry at the University of Copenhagen. His 2003 book Information Theory and Evolution set forth the view that the phenomenon of life, including its origin and evolution, including human cultural evolution, has its background situated over thermodynamics, statistical mechanics, and information theory. Avery died on January 4, 2024, at the age of 90.