Climate & Environment

Authorities arrest man on suspicion of arson in 34,000-acre Line Fire

Some 65,600 structures, 13,000 under evacuation orders, remain threatened as the fire burns in steep terrain.

A row of firefighters have their backs to the camera as they watch smoke rise over a mountain

Bold cabernet sauvignon wines made Napa Valley famous. Now, hotter temperatures are starting to damage the grapes, so some wineries are starting to experiment.

Listen 4:31

Much of the Colorado River’s water goes to feed cows. How changing your diet could help

Nearly half the water drawn from the Colorado River goes to grow feed for beef and dairy cows. Researchers say modest changes in American diets could help the river — and the climate.

Listen 46:06

This aerial view shows an irrigation canal through agriculture fields.

In LA, need for free AC units outpaces supply. How you can get your hands on one

Hundreds of people age 60 and above waited in line to get portable AC units in Lincoln Heights.

Two middle-aged men wearing baseball caps lift a large box into a white car. In the background are blue shade tens that read "Los Angeles Department of Water and Power." The man on the left has light brown skin and wears a grey long sleeved shirt and khaki work pants and boots and the man on the right is Black and wears a khaki green short sleeved shirts, jeans and workboots.

Airport Fire grows to 22K acres in Orange County; state of emergency declared

Fire officials said OC Public Works was moving boulders when the fire ignited in Trabuco Canyon.

Dogs hang out the window of a truck as a massive fire burns in the background.

LA heat waves make the air worse to breathe. Here’s why

The sunlight sparks reactions in the air that are harmful to our heart and respiratory systems, but extreme heat accelerates it.

The downtown L.A. skyline is obscured by smoggy air

Get ready for fire season. Here's how to sign up for emergency alerts in Southern California

Each county in Southern California has its own way of doing things. Here’s a list of emergency alert systems to sign up for so you’ll always be in the know.