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A dancing group poses in sync, their arms arched, standing in formation on a stage in a dark dance studio. In the background is a black backdrop with LED lights hanging on metal railing rigs.

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How we tested and evaluated AI-generated dance videos

None of the videos generated by the leading AI platforms showed the actual dances we requested.

By Mohamed Al Elew, Khari Johnson and Levi Sumagaysay • January 21, 2026

A black and white photo of a car driving by a giant sign that reads "DMV" and "Department of Motor Vehicles" outside an office.

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How we reported on California’s deadly drivers

A CalMatters investigation finds that the California DMV routinely allows dangerous drivers with horrifying histories to continue to operate on our roadways.

By Robert Lewis • April 14, 2025

Four people, a mix of lawmakers and officials, sit behind a dais in a conference hall with attendees.

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How we investigated California’s campaign finance watchdog

Despite inconsistencies and flaws in the Fair Political Practices Commission’s enforcement data, we found 15% of investigations took more than two years to resolve.

By Jeremia Kimelman and Yue Stella Yu • October 24, 2024