Koreatown Youth & Community Center, a member of the Arbor Day Foundation’s Alliance for Community Trees program, is partnering with DoubleTree by Hilton, one of Hilton’s 14 world-class brands, to plant 45 trees to beautify the historic Pico Union neighborhood next to downtown Los Angeles. The event will help raise Pico Union’s tree canopy, which is more than 10 percent lower than the national average.