(AP) NEW YORK — The residential high-rise on Manhattan’s Upper West Side appears to be a typical luxury structure from the outside: In the expansive foyer, which is decorated with marble and tapestries, a doorman welcomes guests.

However, there is an extraordinary collection of technology in the basement that only a select few buildings in the globe, let alone those in New York City, can claim. The owners have erected a tangle of twisting pipes and tanks that catch carbon dioxide from the huge, gas-fired boilers in the basement before it reaches up the chimney and is discharged into the air in an effort to substantially cut the 30-story building’s emissions.