Sentence 1: "City-grown pollution, and ozone in particular, is tougher on country trees," says Cornell University ecologist Jillian Gregg.
Sentence 2: "I know this sounds counterintuitive, but it's true: City-grown pollution -- and ozone in particular -- is tougher on country trees," U.S. ecologist Jillian Gregg said.
Similarity score (0-5): 3.6