Natasha Uzcátegui-Liggett

CalMatters analysis of campaign finance contributors helped uncover some of the major influences behind the propositions on Californians’ ballots this year.

Investigations into fatal shootings by California police now take so long that officers often can't be decertified or prosecuted, a CalMatters investigation shows.

San Diego no se siente como una ciudad sitiada por la Patrulla Fronteriza, pero es escenario de un aumento dramático en las detenciones de inmigrantes durante la campaña de represión del presidente Trump.

San Diego doesn't feel like a city under siege by Border Patrol, but it's the scene of a dramatic increase in immigration arrests during President Trump's crackdown.

Even among experts the cost of water supplies is hard to pin down. A new study reveals huge differences in what water suppliers for cities and farms pay for water from rivers and reservoirs in California, Arizona and Nevada.

Billions of state and federal dollars are spent on Lake Tahoe. But is all this attention actually protecting this unique treasure? Pollutants pour in, while development continues. Funding has shifted in focus to tourism and traffic projects, while money spent directly on fixing the lake has declined.

CalMatters and The Markup reported on how residents in each of California’s 58 counties can sign up for local emergency alerts, and found a few surprises along the way. Here’s how you can build the same guide in your state.

Early warning systems save lives during disasters, but a recent FEMA survey found that only a third of people are signed up. Use this resource to find your county’s emergency alert sign-up page.