Researchers from the Indian Institute of Technology Gandhinagar and the Helmholtz Centre for Environmental Research (Leipzig) have shown how natural ocean cycles and rainfall patterns prevent a synchronised, planet‑wide drought and global-scale agricultural collapse. Based on over 100 years of climate data, the study finds that though warming increases drought severity, synchronised droughts are rarer than expected, affecting only 1.8–6.5% of land at any time. By treating droughts as a connected global system, the research team has identified key “drought hubs” and early‑warning regions that can help stabilise food markets.

How much will heat, flooding, drought and storms increase as a result of human-induced climate change? In a groundbreaking study, climate researcher Gottfried Kirchengast and his team at the University of Graz have developed a new method for computing the hazards from extreme events: it can compute all relevant hazard metrics for events such as heat waves, floods and droughts in any region worldwide with unprecedented information content. Using it for Europe, the researchers found that anthropogenic climate change has caused a tenfold increase in extreme heat in recent decades. The study, published in the journal Weather and Climate Extremes, also provides a basis for better quantifying the damage to people, ecosystems and infrastructure.