Infrastructure

Expert Voices

Airports embrace renewable energy to cut air travel emissions

Illustration of an airplane runway in the shape of a recycling symbol
Illustration: Sarah Grillo/Axios

Airports in the U.S. are attempting to reduce emissions by replacing equipment with electric- and solar-powered technology.

Why it matters: Air travel accounts for 2% of global emissions, and cities and public agencies are uniquely positioned to use their relationships with airlines and terminal operators to impact emissions reduction practices at the airports themselves.

Expert Voices

How tapping to pay subway fares could improve transit

A woman using the MTA's new OMNY screens on a subway turnstile.
Credit: Marc A. Hermann/MTA New York City Transit/CC BY 2.0 (Cropped)

The New York City subway system recently reached 1 million “taps” in its contactless payment system, as a growing number of public transit agencies adopt the payment technology for its convenience and efficiency.

Why it matters: Contactless payment technology can bring down operating costs and act as a test case for subsequent attempts to make subways more accessible and modern.