Climate

A small army of laborers, heavy-equipment operators, hazmat technicians and truck drivers have cleared more than one-third of the home lots left in charred ruin by January’s firestorms — a …

A 3-year-old girl in Mexico died this month after getting infected with H5N1 bird flu, according to a report issued by the World Health Organization this week. Authorities say the …

Shooting stars will usher in Earth Day starting late Monday night as the Lyrid meteor shower reaches its peak — and Californians will have some of the best views in …

Fishery regulators on Tuesday called for shutting down commercial salmon fishing along the California coast for an unprecedented third year in a row in an effort to help the declining …

On Jan. 7, two residents on opposite sides of Altadena — Francois Tissot, a Caltech professor who studies the geology of ancient Earth and our solar system, living in the …

The Trump administration on Wednesday proposed a rule to redefine what it means to “harm” a protected species under the Endangered Species Act, a move conservationists say will strip vulnerable …

The Tijuana River has been plagued with raw sewage and industrial waste from Tijuana for decades, fouling beaches along the U.S.-Mexico border with polluted water and sending foul odors drifting …

Health officials in Hood River County, Ore., are investigating three cases of a rare and fatal brain disease known as Creutzfeldt-Jakob disease. Two people have died and a third person …

BOGOTA, Colombia — A recent amendment to Peru’s Forestry and Wildlife Law is drawing fierce backlash from environmental groups and Indigenous groups that warn it could accelerate deforestation in the Amazon rainforest …

Grizzly bears are extinct in California but still show up everywhere you look. The golden bruins emblazon the state flag and seal, live on in cartoonish effigy as university mascots, …