California state study finds 39,000 abandoned mines throughout the state. These mines, dating back to the 19th century, are safety hazards and can contaminate air and water.
"The danger of abandoned mines is becoming more evident as the population grows in high-density abandoned mine areas such as the Sierra Nevada foothills...Hazards can include old explosives, drums of chemicals, poisonous gases and runoff contaminated with chemicals such as mercury, arsenic, asbestos and chromium. "
Thanks to Abhijeet Chavan
FULL STORY: Legacy of Gold Rush: Many more dangerous shafts than thought

Planetizen Federal Action Tracker
A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

Walmart Announces Nationwide EV Charging Network
The company plans to install electric car chargers at most of its stores by 2030.

Chicago Approves Green Affordable Housing Plan
The Mayor’s plan calls for creating a nonprofit housing corporation tasked with building affordable housing that meets Green Building standards.

The World’s Longest Light Rail Line is in… Los Angeles?
In a city not known for its public transit, the 48.5-mile A Line is the longest of its kind on the planet.

Quantifying Social Infrastructure
New developments have clear rules for ensuring surrounding roads, water, and sewers can handle new users. Why not do the same for community amenities?

Dallas Code Reform Makes Way for Missing Middle Housing
The Dallas City Council voted to change the city’s building code to allow up to eight residential units in three-story buildings.
Urban Design for Planners 1: Software Tools
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
Planning for Universal Design
Learn the tools for implementing Universal Design in planning regulations.
City of Moorpark
City of Tustin
City of Camden Redevelopment Agency
City of Astoria
Transportation Research & Education Center (TREC) at Portland State University
Regional Transportation Commission of Southern Nevada
Toledo-Lucas County Plan Commissions