Turning Out the Lights on Light Pollution

Limiting light pollution can have beneficial effects for humans, animals, and the local economy.

1 minute read

December 5, 2023, 9:00 AM PST

By Diana Ionescu @aworkoffiction


Milky Way in Big Bend National Park, Texas.

The Milky Way visible in Big Bend National Park, Texas. | Vinnie Fallico / Adobe Stock

Writing in Smart Cities Dive, Kalena Thomhave describes the efforts being made by three communities to protect their night skies and become certified Dark Sky  Communities.

Earning the certification from DarkSky International can take years. Cities dedicated to the process, however, say it comes with a slew of benefits: They see not only the stars but also reduced energy consumption, lower electricity bills, healthier residents, improved environmental protection, increased ecotourism and even safer streets.

The certification program offers resources and information on the types of retrofits cities and towns can make to reduce light pollution while maintaining safety and security. Limiting glare can have benefits for people on the road, too. “Pedestrians and drivers on the road are less likely to be temporarily blinded by a bright light if it’s directed toward the ground properly.”

The three communities profiled in the article range from Bee Cave in the Texas Hill Country to a lakeside Indiana town and a Nevada city that hopes to boost ‘astrotourism’ to the area by keeping its nighttime conditions optimal for stargazing.

Monday, December 4, 2023 in Smart Cities Dive

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Cover CM Credits, Earn Certificates, Push Your Career Forward

Logo for Planetizen Federal Action Tracker with black and white image of U.S. Capitol with water ripple overlay.

Planetizen Federal Action Tracker

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

June 11, 2025 - Diana Ionescu

Metrorail train pulling into newly opened subterranean station in Washington, D.C. with crowd on platform taking photos.

Congressman Proposes Bill to Rename DC Metro “Trump Train”

The Make Autorail Great Again Act would withhold federal funding to the system until the Washington Metropolitan Area Transit Authority (WMATA), rebrands as the Washington Metropolitan Authority for Greater Access (WMAGA).

June 2, 2025 - The Hill

Large crowd on street in San Francisco, California during Oktoberfest festival.

The Simple Legislative Tool Transforming Vacant Downtowns

In California, Michigan and Georgia, an easy win is bringing dollars — and delight — back to city centers.

June 2, 2025 - Robbie Silver

Street scene in Kathmandu, Nepal with yellow minibuses and other traffic.

The Small South Asian Republic Going all in on EVs

Thanks to one simple policy change less than five years ago, 65% of new cars in this Himalayan country are now electric.

1 hour ago - Fast Company

Bike lane in Washington D.C. protected by low concrete barriers.

DC Backpedals on Bike Lane Protection, Swaps Barriers for Paint

Citing aesthetic concerns, the city is removing the concrete barriers and flexposts that once separated Arizona Avenue cyclists from motor vehicles.

3 hours ago - The Washington Post

Bird's eye view of studio apartment design.

In These Cities, Most New Housing is Under 441 Square Feet

With loosened restrictions on “micro-housing,” tiny units now make up as much as 66% of newly constructed housing.

5 hours ago - Smart Cities Dive