Forecasters warned of ‘potentially historic rainfall’ and ‘dangerous to locally catastrophic flooding.’ A hurricane scientist explains what El Niño, a heat dome and mountains have to do with the risk.

Forecasters are warning of a destructive storm for Mexico and the US Southwest – with El Niño, a heat dome and the mountains all playing a role.

Forecasters are warning of a destructive storm for Mexico and the US Southwest – with El Niño, a heat dome and the mountains all playing a role.

The largest dam removal project is moving forward on the Klamath River in California and Oregon. Tribal nations there have fought for decades to protect native fish runs and the ecology of the river.

Some of the world’s most threatened birds are exposed to plastic pollution – even far out to sea.

An El Niño weather-warming phase is underway in the Pacific – but what does this mean for the weather in Europe?

A new report lays out steps communities can take to help their residents survive heat waves as the risk of dangerous temperatures rises.

Freshening seawater around Antarctica is disrupting a global ocean conveyor which regulates the climate.

The official forecast calls for a strong El Niño by winter, but other models suggest it might dip in and out. An atmospheric scientist explains.