Sustainable sanitation and water in small urban centres

Brooklyn Bridge foregrounding New York City's skyline

SEI at the Climate Week in NYC 2026

Event on 20 September – 27 September in New York / SEI joins the Climate Week in New York to highlight global leadership and finance solutions for accelerating the transition to net zero industry.

08:00 EDT / Available online

Introducing the OPERA database

SEI brief / Learn about the OPERA database, deployed to find evidence for the relationship between policy processes and outcomes to evaluate policy success.

16 September 2026

Women from Majhora Village, in the Mahottari District of Nepal, make themselves warm during the evening. There was not any sun for one week in the village due to the winter fog. During the winter fog people burn agriculture byproducts more and more to keep them warm. The more they burn the more black carbon is produced, prolonging the fog and increasing its impact on the people of the Terai region during the winter season.

Estimating the vulnerability contribution to 1990–2019 changes in the health burden of ambient air pollution: a global modelling study

Journal article / This research examines how changes in population vulnerability and exposure to air pollutants affect global air pollution-related mortality trends.

15 September 2026 / About Pollution

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