"Green Riyadh" is one of the most ambitious afforestation projects in the world that would help reduce some of the harms of urbanization, and make the city more capable of coping with the environmental changes. The first phase of the project consists of planting around 31,000 trees over 144 meters of main routes in Riyadh, including King Salman Road, King Khalid Road, King Fahd Road, Airport Road, Makkah Road, the ...