Alejandra Reyes-velarde

‘Herculean effort’: These port communities have waited decades for clean air. Why a new plan may fall short

California has an aggressive mandate for zero-emission trucks. But companies face big obstacles and people are still breathing dangerous exhaust.

California rule would lead to 50% sales of electric motorcycles to help clean up smog. Bikers say the models aren’t ready for long-distance rides.

About 1 in 5 CA schools has no air conditioning. Underfunded schools struggle to keep cool as aging systems break down and heat intensifies.

Se estima que 1 de cada 5 escuelas no tiene aire acondicionado y otro 10% necesita reparaciones. Las escuelas no tienen fondos suficientes

Inland areas with big population booms will experience the most high heat days. The combination puts more people at risk — and cities are unprepared.

A hazardous haze, made up of small, inhalable particles, casts a pall over the desert. This year has been severe, triggering asthma attacks.

Following CalMatters reporting, California takes steps toward allowing undocumented immigrants to access cell phone subsidies.

Groups push California to plant more trees at schools to protect students from a warming planet. Here’s how they want to pay for it.

A company should have to pay out money it made while employing workers under the age of 18, feds say in a lawsuit.