El Niño's resurgence poses significant risks, particularly for vulnerable regions like South Asia, which could face severe droughts and agricultural losses. The phenomenon is also expected to intensify heatwaves and wildfires globally, with potential economic and humanitarian crises. Countries already grappling with debt and food insecurity, such as parts of Africa and Asia, are at heightened risk. The cascading effects could disrupt food supplies, increase energy prices, and strain healthcare systems, even in developed nations. Scientists warn that the confluence of El Niño with existing climate stressors could lead to unprecedented challenges.