Scientist is a name of at least two acts:

[[b]1] A pseudonym of dub musician Hopeton Brown (aka Overton Brown), from Kingston, Jamaica). Brown burst onto the reggae scene in the early '70s with a reckless mixing style that seemed to outdo even King Tubby's wildest extravaganzas. He began his career as an engineer at Tubby's in 1978. Shortly afterwards he became a Tubby protégé and, by 1980, had gained a reputation with a distinctive mixing style.

He became worldwide known after Rockstar Games used his album 'Scientist Rids the World of the Curse Of the Vampires' in 2001.
Sites: Facebook and DubMusic.com (official)

[[b]2] Chicago born metal/sludge/punk/experimental noise project featuring ex-member of Yakuza Eric Plonka (guitar/vox) and ex- Fireisborn members Justin Cape (drums) and Patrick Auclair (bass). Their new album 'advanced idea mechanics' produced by Sanford Parker who has done work for bands like, Nachtmystium, Voivod, Bison A.D, and Indian as well as being a member of Nachtmystium, Buried At Sea, The High Confessions and Minsk. A.I.M includes guest appearances by Stavros Giannopolous of The Atlas Moth, Bruce Lamont of Yakuza and Jeff Lyman of Dead Sheriff.
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Artist biography from last.fm