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When the world reached 7 billion people in 2011, public discussion often assumed growth would continue accelerating indefinitely. The demographic picture now looks different. The United Nations estimated the world…

Can the world run on 100% renewable energy by 2050? In 2026, the answer depends on what “100%” covers. Supplying nearly all electricity from wind, solar, hydropower, geothermal and sustainable…

A green back-to-school plan in 2026 should begin with a surprising rule: do not shop until you know what can be reused. The environmental cost of school supplies is concentrated…