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Mental health disorders are rising globally and artificial light at night is implicated in emotional well-being. A new study from China reveals how the varying wavelengths of nighttime light specifically affect sentiment, and offers key insights for urban lighting design aimed at improving mental health.
Climate mitigation plans too often overlook urban construction. Levels of historic greenhouse gas emissions resulting from construction in cities have now been estimated, and rates determined at which cities must reduce construction emissions to stay within climate limits.
Air connectivity is an important aspect of global business, but what makes a city ‘well connected’ is unclear. We found that, more important than the number of flights between cities, companies choose to locate their subsidiaries in locations that are well integrated within the global air traffic network.
Climate risk is underpriced in US municipal bonds, creating vulnerabilities as insurers retreat and adaptation planning remains disconnected from finance. This Review reveals a climate-debt doom loop and proposes governance reforms and disclosure standards to strengthen municipal resilience.
