The exhibition of Dale Chihuly’s gorgeous glass sculptures at the Dallas Arboretum that was slated to close next week now will be open through the end of the year. Brian Shivers, chairman of the board for the Dallas Arboretum, said the extension can be considered a “holiday gift to the city.” If you haven’t had an opportunity to see the brightly colored glass sculptures set within the gardens at the Dallas Arboretum, you now have more time to get there.