The Green Roofs of Mexico City

Mexico City, which has struggled for decades with dangerous air quality, has become a global leader in combating ambient air pollution. In 1992, the United Nations described Mexico City’s air as the most polluted on the planet. Since then, the city has enacted stringent pollution control measures to improve its reputation and quality of life.

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Harvesting Water in North Gondar

Can trends towards water scarcity, soil erosion and food insecurity be reversed? According to the non-profit Roots Up, this can be achieved with simple, available and sustainable solutions. Their dew collector greenhouse provides an ideal environment for growing crops and harvests clean water for irrigation and drinking in North Gondar, Ethiopia.

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