John D. Harden
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jdharden.bsky.social
John D. Harden
@jdharden.bsky.social
Investigative data reporter | UC Berkeley lecturer

R devotee, py-curious
"Across the country, eating beef is the bigger contributor to harmful pollutants. But it’s not as simple as that. Its origins matter. Eating a steak or a burger in Milwaukee, where the meat comes from nearby dairy cows, generates fewer emissions than in Oklahoma City."
October 21, 2025 at 8:45 PM
I used a headless browser using rselenium to cycle through each species in the city’s plan to download the corresponding distribution list, creating a database of tree ranges.

Our story: wapo.st/43ijIxq

Maps and illustrations by Dylan Moriarty and Tucker Harris.
October 20, 2025 at 5:14 PM
We used the USDA’s PLANTS database, which has distribution data built into it.
October 20, 2025 at 5:14 PM
Empty desks: How the District’s failure to curb truancy in middle schools yielded the biggest youth crime surge in a generation.
How D.C.'s failure to curb truancy fueled a surge in youth crime
District leaders linked school attendance to crime, but failure to reduce absenteeism in middle schools yielded the biggest youth crime surge in a generation.
wapo.st
June 9, 2025 at 5:05 PM
Do kids feel safe in D.C.? We asked them.
Do kids feel safe in D.C.? We asked them.
Youth crime in the District surged in 2023. The Post spoke to nearly two dozen middle school students about violence and safety.
wapo.st
June 9, 2025 at 5:05 PM
D.C. teens needed rehabilitation to keep the city safe. They languished in a violent detention center instead.
D.C. teens in need of rehabilitation wait months in a detention center
The Department of Youth Rehabilitation Services struggles to provide adequate services to many teens, leaving them to languish in a violent detention center.
wapo.st
June 9, 2025 at 5:05 PM
D.C. court officials repeatedly lost track of teens wearing ankle monitors. The timing was deadly.
D.C. juvenile court’s reliance on ankle monitors had deadly outcomes
D.C. juvenile courts lost track of teens wearing GPS ankle monitors at critical moments, as they have committed or fallen victim to crime.
wapo.st
June 9, 2025 at 5:05 PM