The United Nations says the world is now likely to exceed the 1.5°C warming threshold, shifting the focus from prevention alone to what happens after overshoot. Its new assessment examines ways temperatures could later be brought back down, marking a direct effort to map responses to a climate future that is increasingly expected rather than hypothetical.

Scientists identify a vast 10-sided wave pattern circling Saturn’s south pole, an atmospheric structure unlike familiar storm systems on Earth. The feature appears embedded in the planet’s cloud tops and stands out for its sharply geometric shape, giving researchers a new puzzle about how large-scale weather patterns form and persist in giant-planet atmospheres.