The global mixing of plants and animals now going on could be a major channel for unplanned environmental change.
"The ecological alterations that an aggressive alien may bring vary. It can co-opt soil microbes to enhance its growth. It can deny native animals their natural food and shelter. It can create a new wildfire hazard as alien grasses are doing in some North American deserts. New research shows it can even help a new insect species to emerge."{
Thanks to Chris Steins
FULL STORY: An alien invader spawns a species
Planetizen Federal Action Tracker
A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.
Chicago’s Ghost Rails
Just beneath the surface of the modern city lie the remnants of its expansive early 20th-century streetcar system.
San Antonio and Austin are Fusing Into one Massive Megaregion
The region spanning the two central Texas cities is growing fast, posing challenges for local infrastructure and water supplies.
Since Zion's Shuttles Went Electric “The Smog is Gone”
Visitors to Zion National Park can enjoy the canyon via the nation’s first fully electric park shuttle system.
Trump Distributing DOT Safety Funds at 1/10 Rate of Biden
Funds for Safe Streets and other transportation safety and equity programs are being held up by administrative reviews and conflicts with the Trump administration’s priorities.
German Cities Subsidize Taxis for Women Amid Wave of Violence
Free or low-cost taxi rides can help women navigate cities more safely, but critics say the programs don't address the root causes of violence against women.
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.
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City of Astoria
City of Portland
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