Simplify the following text for a Grade 10 native English-speaking person.
Original: Linus Carl Pauling ( February 28 , 1901 â `` August 19 , 1994 ) was an American scientist , peace activist , author and educator .
Simplified: Linus Carl Pauling ( February 28 , 1901 â `` August 19 , 1994 ) was an American chemist , peace activist , author and educator .