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 tiger's roar echoed through sal forests stretching from the Brahmaputra to the Indus, a distance of 3,000 kilometers unbroken...
Africa’s wilderness shrank from 92% to under 50% due to colonization, extraction, and climate change—yet community-led conservation offers hope for recovery.
East Asia’s ecosystems face collapse—but bold conservation, tech innovation, and cultural wisdom offer a path to recovery. The next decade is decisive.
1. Historical Baseline
Pre-1750 Wilderness Extent
South America contained 1.7 billion acres of wilderness in 1500—95% of the continent's land area.¹ The Amazon basin alone...