So you think cars are to blame for L.A.'s air pollution problems? That might be bull excrement, literally, reports David Biello.
A new study in the journal Geophysical Research Letters pins the blame for L.A.'s foul air on our four-stomached friends.
"You might not think of Los Angeles as a cow town. But there are nearly 300,000 cattle in the region, according to the U.S. Department of Agriculture. And now flights to measure local air pollution have revealed that the cows may be a bigger factor in dangerous air pollution than the cars are," writes Biello.
"The good news: it's a lot easier to control emissions from a few big dairy farms than 10 million vehicles. So an effort to reduce the pollution from cows and their bacteria could have a bigger impact on Los Angelenos air than further emission cuts from cars."
FULL STORY: L.A. Needs to Stop Being Such a Cow Town

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