According to Portland, Oregon Mayor Sam Adams, that roadblock is the lack of financing for clean technology upgrades for buildings. Fast Company talks to Adams about his goal to make Portland the most sustainable city in the world.
To that end, Adams established Clean Energy Works, a pilot program to offer financing for clean energy upgrades. Other strategies Adams is employing include building bicycle boulevards and creating "20-minute neighborhoods."
From the interview: "Two-thirds of all trips in Portland and in most American cities are not about getting to and from work. So if I can offer quality, affordable goods and services, eliminate food deserts, have neighborhoods with schools and parks and amenities--if I can create these 20-minute complete neighborhoods all over Portland--it strengthens our local economy. "
FULL STORY: Innovative Mayor Sam Adams Builds a Cleaner Portland

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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Planning for Universal Design
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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