As Southern California air becomes cleaner, the cost to polluters becomes greater. The Clean Air Credits program is doing its job, say proponents.
Companies that don't have pollution problems can sell their clean air credits to companies that do. The cost of a credit (the right to emit one pound of pollutants) went from 13 cents in 1999 to a current cost of $13 per credit. DWP found it cheaper to install new equipment than to buy credits. Proponents see the program as a resounding success.
Thanks to Gwenn Hilburn
FULL STORY: Cost of Clean Air Credits Soars in Southland

Analysis: Cybertruck Fatality Rate Far Exceeds That of Ford Pinto
The Tesla Cybertruck was recalled seven times last year.

National Parks Layoffs Will Cause Communities to Lose Billions
Thousands of essential park workers were laid off this week, just before the busy spring break season.

Retro-silient?: America’s First “Eco-burb,” The Woodlands Turns 50
A master-planned community north of Houston offers lessons on green infrastructure and resilient design, but falls short of its founder’s lofty affordability and walkability goals.

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Analysis: Cybertruck Fatality Rate Far Exceeds That of Ford Pinto
The Tesla Cybertruck was recalled seven times last year.

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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.
EMC Planning Group, Inc.
Planetizen
Planetizen
Mpact (formerly Rail~Volution)
Great Falls Development Authority, Inc.
HUDs Office of Policy Development and Research
NYU Wagner Graduate School of Public Service