Original sentence: Stevenson conducted field research into reincarnation in many locations, including Africa, Alaska, Europe, India and both North and South America, logging around 55,000 miles a year between 1966 and 1971
Edited sentence: Stevenson traveled extensively to conduct field research into reincarnation and investigated cases in Africa, Alaska, Europe, India and both North and South America, logging around 55,000 miles a year between 1966 and 1971