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Such a rapid and unexpected growth led to the UN declaring Mexico City as the most polluted city in the world in 1992. This was partly due to Mexico City's high altitude (7382 ft above sea level), which causes its oxygen levels to be 25% lower. Carbon-based fuels also do not combust completely. Other factors include the proliferation of ...
Valle de Bravo, a man-made lagoon located approximately 85 miles west of Mexico City, faces a significant water crisis. The lake’s capacity has diminished to 28% of its usual level due to an extended dry season, with satellite imagery showing an 18% reduction in the shoreline between 2022 and 2024.
In 2002, Mexico had the second fastest rate of deforestation in the world, second only to Brazil. [5] It had a 2019 Forest Landscape Integrity Index mean score of 6.82/10, ranking it 63rd globally out of 172 countries. [6] In Mexico, 170,000 square kilometers (65,637 sq mi) are considered "protected natural areas".