Today’s Solutions: April 02, 2025

New international agreements commit all UN member nations to solving humanity’s greatest challenges over the next few decades, from eliminating extreme poverty and unhealthy living conditions to addressing climate change and arresting environmental degradation. But how we’ll achieve these extraordinary goals in such a short amount of time remains a major challenge. According to a new paper published this week in PNAS, creating a quantitative and systematic understanding of how cities …

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