Riyadh is planting 7.5m trees and running a new metro against an Expo 2030 deadline. A look at the water, heat and money behind the desert city's greening
1. Historical Baseline
Pre-1750 Wilderness Extent
The jaguar padded through continuous forest from Mexico's Yucatan to Colombia's Darién Gap, never leaving tree cover across 2,000 kilometers.¹...
Earth’s poles—vast, fragile, warming fast—anchor global climate. Indigenous wisdom, science, and cooperation are key to preserving these icy wildernesses.