Have a fresh take on the issues of the day or a quirky news item? The Boston Globe replaces its Focus section with Ideas, a new weekly section appearing Sundays, focused on cutting-edge thinking and academic, cultural, intellectual and social debate. Alexander Star, a Boston native and former editor of Lingua Franca, a magazine focused on academia, will serve as editor of the section, which will also include an expanded Books section with four pages for reviews and features. (Star, 617/929-3000)