One theme of recent transit spending--better late than never--is funding links from central business districts to airports, which are a huge source-point of carbon emissions from all those taxis, buses and cars feeding airplane passengers to the terminals--as well as taking them away to the ground destinations.

So, it's not surprising that the feds are handing out $1.58 billion to 27 transit projects, including a light-rail link from downtown Denver, CO to its airport--reducing the carbon footprint of that massive facility, the Environment News Service reports. Other projects including a New York rail connection from Long Island commuter lines to Grand Central station (the lines now go to Penn Station), further work on connecting DC to its Dulles International Airport, and a Minneapolis-St. Paul light-rail connection, which would (by implication) connect Minnesota's capital city to the Twin City's airport (MSP) via an existing link that runs from downtown Minneapolis to MSP.

By the way, rail links to LAX's (busiest airport on the west coast of North America) terminals are not even in the planning stage.