A natural cycle helps regulate the carbon in our atmosphere, but humans are knocking it off balance with emissions, according to NASA.
Scientists think strong El Niños, like the one that melted so much surface ice in Antarctica last year, will become more common in the future.
NOAA is predicting an active hurricane season. It estimates there will be five to nine hurricanes, with two to four of them being major storms.
A La Niña winter may be on the way.
A La Niña is no longer expected this fall or winter.
El Niño is done, and La Niña is set to take its place.
Weather and climate patterns are about to take another turn as El Niño shifts to a La Niña.
Heavy rains in different parts of the United States have had very different results.
The return of El Niño rains is helping ease California's drought.
California's years long drought still lingers after a wet El Niño winter.
It appears this El Niño is winding down.
Rain is finally returning to the West Coast after a week-long hiatus.