Phoenix experienced its hottest winter on record, ending with a string of 90-degree days. Experts say it's a sign of a ...

Add Yahoo as a preferred source to see more of our stories on Google. Phoenix AC units were called into service early over the weekend by three straight days of record-breaking winter heat, an ...

After one of the strongest El Niño events ever recorded, scientists now expect the planet’s climate system to swing in the ...

The new methodology will make it more likely we'll see La Niñas in our future and less likely we'll see El Niños.

WASHINGTON (AP) — The natural El Nino cycle, which warps weather worldwide, is both adding to and shaped by a warming world, meteorologists said. A new study calculated that an unusual recent twist in ...

There are increasing indications El Niño is likely to form and strengthen into potentially a significant event during the ...