El Nino and La Nina

Evidence is mounting against the so-called climate change hiatus — a period lasting from 1998 to 2012 — when global temperatures allegedly stopped rising as sharply as they had before.

This year's hurricane season is likely to be more active than usual, thanks to an absent El Niño and warmer tropical Atlantic Ocean waters.

Back-to-back hurricanes Matthew and Nicole may signal worse weather to come if La Niña climate conditions take hold across the globe, according to weather scientists.

Australia's Great Barrier Reef corals are in trouble, with the northern part of the reef experiencing "the worst mass bleaching event in its history."

A satellite image shows a developing winter storm moving east toward the mid-Atlantic states.

Hurricane Pali is the earliest ever recorded hurricane in the Central Pacific, a rare winter tropical cyclone that benefited from a strong El Niño.

Two venomous sea snakes have washed up on Southern California beaches in 2015.

This year's particularly strong El Niño is expected to get even stronger before it's done.

There's still time to assemble an appropriately geeky getup in time for this weekend's festivities.

A strong El Niño is brewing in the Pacific, which should bring warmer and wetter weather across the Southern and Eastern United States.

El Niño is expected to be more beast than "little boy" this year — a forecast about the weather pattern that becomes clear in newly released maps of the waters around the equatorial Pacific Ocean.

Snakebites in Costa Rica spike during El Niño and La Niña as venomous snakes respond to changes in the weather and climate.

June 2015 was the warmest June on record, and there's a good chance 2015 will be the warmest year.

No, El Niño is not the source of every weather crisis, but it can be devastating, and researchers have uncovered a new clue that may help predict how bad things can get.