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I use data to power accountability journalism. That means digging through databases and public records to uncover stories about how your identity and zip code can affect the kind of justice you get in Southern California.
As a data reporter, my work spans different beats. I’ve covered the avalanche of outside money in local politics, spiking firearms sales, Los Angeles’ bicycle infrastructure, and police militarization. I helped build a unique database on police shootings in Los Angeles and San Bernardino counties for KPCC’s Officer Involved project.
I attended Macalester College and the UC Berkeley Graduate School of Journalism and got my start in journalism at KFAI Fresh Air Radio in Minneapolis.
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Stories by Aaron Mendelson
If you vote in the 43rd Assembly District, you've probably seen the glossy mailers, many of them bearing negative claims about one candidate. Here's where they came from.
Pasadena has the highest share of bike commuters of any city around Southern California. But cities in the north of the state are the true bike commuting hotspots.
Metro's trains are late just 1 percent of the time, though that number has ticked up in recent years. Buses can lag behind, but some lines much more so than others.
L.A. County sheriff's deputies shot into moving cars eight times in 2015—a practice discouraged as "dangerous" by department policy. Sheriff Jim McDonnell promises changes.
While LAPD officers have largely stopped shooting into moving cars, LA County sheriff's deputies have continued the practice despite policy changes.
In 2001, a contractor promised to install hundreds of shelters in Los Angeles. But the agreement unraveled and the majority still haven't gone up. See where on KPCC's map.
A KPCC probe found the city's bus shelter program has collapsed, with hundreds of structures unbuilt and millions in projected revenues yet to be realized.
Gun sales surged last year after the San Bernardino shooting. Those sky-high sales have carried over into 2016, new data shows.
Law enforcement across Southern California employ automated license plate readers. But many have failed to make their policies on the technology public.
Districts such as the Los Angeles Department of Water and Power and the city of Long Beach would have met their new water conservation targets.
Real-life science lessons in Lincoln Heights are leading to student advocates for cleaner air.
How much rain has El Niño brought this winter? We crunched rainfall data from 20 rain gauges in greater Southern California to get an answer.
Living next to heavy traffic can be harmful to children's health. Yet dozens of child care centers in Los Angeles County are located next to heavily-trafficked highways.
A KPCC investigation found 169 childcare centers located too close to highly-trafficked freeways, putting small children's health at risk.
LAPD officers shot then-gang member Robert Contreras in the back and left him paralyzed. Officers thought he had a gun, but he ended up being unarmed.