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Aaron Mendelson works on KPCC's data journalism and interactive projects.
At KPCC, he has used data to shine a light on the avalanche of outside money in local politics, spiking firearms sales, Los Angeles' bicycle infrastructure, and police militarization. He helped build a unique database on officer-involved shootings in Los Angeles County for KPCC's Officer Involved project.
Aaron joined KPCC in 2014 and became a member of the station's investigative team in 2017
He holds a master's degree from the UC Berkeley Graduate School of Journalism. Prior to joining KPCC, his work had been published and aired by Reuters, Marketplace, KQED and Mother Jones. He got his start in journalism at KFAI in Minneapolis.
Stories by Aaron Mendelson
Turnout estimates climbed in the weeks since June 7, as vote by mail ballots and provisional ballots were added. Early counts showed turnout just below 30 percent in L.A.
After three weeks registrar Neal Kelley says his office has finished counting votes. The official turnout was 49.6 percent of registered voters.
The warning level on AQMD's air quality index is red. That means it's unhealthy for everyone — not just people with respiratory problems.
When two fires broke out in the hills above Duarte and Azusa, they quickly forced evacuations and road closures. Smoke from the fires is visible around the region. This animation shows where smoke could travel, according to United States Forest Service projections
More than $1.4 million in political spending from backers of charter school reform resulted in a stalemate. Considerably more spending is possible before November's general election.
Running calculations under a state-mandated "stress test," the Metropolitan Water District says it's got available supplies to withstand three more years of drought.
Semi-final official returns show an L.A. County turnout of 29.9 percent, up from the presidential primary four years ago, but far below the 55.2 percent of eligible voters who turned out in 2008.
Beyond the presidential contests, there are important races that Southern California voters had to consider. We're tracking the Senate, House, statehouse races and more here.
If past elections are any guide, turnout for the next week's presidential primary election may be underwhelming in Los Angeles County, even with a heated Democratic campaign.
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.