Complex sentence: During World War II he and his brother Ian lived with their grandparents in Guildford and then with their father in Sussex, and he attended Guildford Royal Grammar School, Gordonstoun School, and Oxford University, where he earned a doctorate in geology.
Split into simpler sentences: During World War II he and his brother Ian lived with their grandparents in Guildford and then with their father in Sussex. He attended Guildford Royal Grammar School, Gordonstoun School, and Oxford University, where he earned a doctorate in geology.