Henry Grabar

Global Green USA

It's Not Easy Being Green Czar

Matt Petersen is L.A.'s first chief sustainability officer, charged with drafting an ambitious plan for a city grappling with drought.

Toa55/Shutterstock.com

As Boomers Age, Walkable Cities Become More Important

Millennials and older Americans agree on city accessibility, and the lobbying powerhouse of the AARP is emerging as a key advocate.

OLIN

Can This Man Bridge Two Disparate D.C. Communities—and a River?

Scott Kratz had a successful career in museum education until he stumbled upon a new calling: building an ambitious, elevated park over the Anacostia River in Washington, D.C.

Rich-Joseph Facun/Reuters

When Climate Change Has Already Come

The country's first institute of adaptation science will help Norfolk, Virginia, deal with its steadily rising waters.

© The Center for Urban Pedagogy

Design That Makes Dry Regulations Come to Life

Since 1997, the Center for Urban Pedagogy has used graphic design to explain byzantine local policies and processes to New Yorkers.  

Pat Wellenbach/AP

The National Champion of Local Business

For nearly two decades, Stacy Mitchell has tried to level a playing field she sees as tilted toward big retail.

Smartphones and the Uncertain Future of 'Spatial Thinking'

Navigation apps are transforming the way we experience urban environments, for better and for worse.

All Aboard Florida

The Triumphant Return of Private U.S. Passenger Rail

Can new train service between Miami and Orlando be a model for the rest of the country?

Flickr user royluck

Can Houston Learn to Love Light Rail?

In a city where nine in ten drive to work, the answer could reshape the future.

Henry Grabar

Love in a Time of Public Transportation

Valentine's Day at the New York City Transit Museum's missed connections party.

The Lost Excitement, Pathos, and Beauty of the Railroad Timetable

An elegy for the paper symbol of the mechanical age.

Shutterstock

How Melbourne Is Selling Commercial Property Owners on Green Retrofits

The city's 1,200 Buildings program has been cited as a model. 

Shutterstock

Why Skeptics Are Happy With Today's Big Climate Change Report

The IPCC's latest assessment is frightening... but it's also bolstering the claims of deniers. 

Shutterstock

The Closest Look Yet at the Relative Energy Efficiency of Big Buildings

How do you reduce the greenhouse gas emissions of skyscrapers? For starters, make a chart. 

Flickr/IntangibleArts

Could Nighttime Deliveries Solve a Lot of Our Traffic Problems?

One man's crusade to get restaurants, shops and offices to receive all their goods between 10 and 6.

Shutterstock

A Necessary War on Garbage Trucks

Inside New York City's plan to reduce the annual miles driven by its sanitation department.

An Amazingly Precise New Tool to Measure Roadway Pollution

Five percent of vehicles are responsible for 90 percent of toxic emissions. Now we can figure out who the culprits are.

Shutterstock

'Microbial Batteries' Could Soon Allow Us to Harvest Electricity From Wastewater

Stanford scientists say they've figured out how, and now the challenge will be to make it cheap enough to do on a large scale.

Flickr/Mircea2011

Why Is There So Little Innovation in Water Infrastructure?

For one thing, consumers have no tolerance for risk.