U.S. meteorologists say an El Nino has formed. That's the natural warming of parts of the Pacific that changes weather around the globe.

A potentially strong El Nino could be officially declared this week and experts warn it could bring major weather shifts across the US.

Warnings of a powerful El Nino weather pattern this year suggest that we may be about to face drought, flooding and extreme heat. What impacts are in store? And can we prepare for…

Scientists have been expecting El Niño to set in for quite a while now—and it’s finally official