Cities growing green: Green Riyadh project to plant 7.5 million trees

Cities growing green: Green Riyadh project to plant 7.5 million trees

Over the next 10 years Saudi will invest $11 bn to plant 7.5 million trees and create more than 3,300 new parks and gardens as part of the Green Riyadh project, which aims to improve air quality and reduce temperature in the city, according the project's director.