Italian fashion house Valentino returned to its roots Thursday with a 1980s-inspired catwalk show in one of Rome's most spectacular venues, two months after the death of founder Valentino Garavani.

Heels click on cracked paving stones as fantastically long-limbed men and women practice moves they hope will whisk them away from South Sudan, one of the fashion world's favourite scouting locations.

A comparative evaluation indicates that climate anomalies over the past three years have been particularly severe. The rise in temperatures in certain regions, alongside unprecedented climate ...