Original: He was awarded the 2005 Nobel Prize in Chemistry, along with Robert H. Grubbs and Richard R. Schrock, for his work from the early 1970s in the area of olefin metathesis.
Simplified: He was awarded the 2005 Nobel Prize in Chemistry, along with Robert H. Grubbs and Richard R. Schrock, for his work from the early 1970s on olefin metathesis.