The sci.* hierarchy is a major class of newsgroups in Usenet, containing all newsgroups whose name begins with "sci.", organized hierarchically.
sci.* groups discuss various scientific and research issues.
List of sci.* groups NewsgroupTopic sci.aeronautics aeronautics sci.agriculture agriculture sci.answers answers to science or scientific questions sci.astro astronomy sci.bio biology sci.chem chemistry sci.cognitive cognitive science sci.cryonics cryonics sci.crypt cryptography sci.electronics electronics sci.engr engineering sci.fractals fractals and chaos theory sci.geo.earthquakes earthquakes, volcanoes, tsunamis, and other geological and seismic events sci.geo.geology geology sci.geo.meteorology meteorology and weather phenomena sci.lang languages and linguistics sci.life-extension life extension sci.logic logic and mathematical logic sci.math mathematics sci.med medicine sci.military.naval naval science sci.optics optics and light sciences sci.optics.fiber fiber optics sci.physics physics sci.physics.electromag electromagnetic phenomena sci.physics.relativity theory of relativity sci.research scientific research sci.space.policy general spaceflight and space policy sci.space.shuttle science and engineering of the Space Shuttle sci.techniques scientific technique
See also List of newsgroups