Diversity in the United States
California's foreign-born share went from 15% to 27% between 1980 and 2018 — but the rest of the country tells a more uneven story. An interactive hex map across all 50 states and four data dimensions: foreign-born share, education, languages spoken at home, and immigration status.
Urban Mobility Index
An ML model trained on 600+ neighborhoods predicts walkability from street connectivity and transit density — giving planners a score for any location, even without pre-calculated metrics.
Pedestrian Activity & San Francisco's Hills
Do San Francisco's steep blocks (≥20% grade) actually keep people from walking through them? AOMA trip data says yes — pedestrian trips drop 60% above 20% grade even where transit is right there.
CitiBike Network Analysis
Summer ridership is 19x winter — and the network rewires itself with the seasons. Mapping 204K Citi Bike trips across NYC and Jersey City using Python, NetworkX, and Plotly.
Quality of Life of NYC Children
Most quality-of-life indices don't really account for kids. We built one that does — a 0–10 score for children across all 55 NYC PUMAs that combines infrastructure access, economic pressure, air and water quality, and demographics.
Got a Ride? Ridesharing Equity in Chicago
I expected Uber and Lyft pickups to cluster in white, wealthy Chicago neighborhoods. 42 million trips later, the data said no — the pickups go where the trips are, which mostly means downtown.